{"kind": "metric", "major": "18", "item": {"slug": "pg_stat_replication-replay_lag", "name": "pg_stat_replication.replay_lag", "name_zh": "", "category": "pg_stat_replication", "summary": "\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002", "aliases": ["replay_lag", "pg_stat_replication"], "content_hash": "2e4eb3416888a73d693c83e7bd343a9fbb6d9afa922c6c2dac8f725dd5e4564a", "versions": {"10": {"view": "pg_stat_replication", "facts": [{"label": "\u89c6\u56fe", "value": "pg_stat_replication"}, {"label": "\u5b57\u6bb5", "value": "replay_lag"}, {"label": "SQL 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{"kind": "same-version-chinese-manual-with-source-derived-structured-summary", "manual": {"url": "/zh/docs/10/monitoring-stats.html#", "anchor": "", "column": "replay_lag", "locale": "zh-Hans", "version": "10", "build_id": 63, "page_key": "monitoring-stats.html", "extraction": "exact-catalog-field", "source_hash": "cf884834ed32c9ed9446bea488204432defca82b5fccd3075349b7b866653094", "source_revision": "unknown:rendered-translation-baseline", "translation_revision": "snapshot:sha256:62997ea80516ad012fbf6359de33f3b016b54c47e2df76e75606116b4baaf8e5"}, "body_sha256": "6ad5a90c45b955f748fc7b458e93f06671296d15def38cbf0e92e161b7fc396c", "runtime_rerun": false, "authored_translation": "source-derived-structured-summary", "source_facts_revision": "94a4b2528372458e5662c18d406629266667c437198160a18cdfd2c4a4d6eee9"}, "facts_zh": [{"label": "\u89c6\u56fe", "value": "pg_stat_replication"}, {"label": "\u5b57\u6bb5", "value": "replay_lag"}, {"label": "SQL \u7c7b\u578b", "value": "interval"}, {"label": "\u5b57\u6bb5\u5b9a\u4e49\u8bb0\u8f7d\u7684\u5355\u4f4d", "value": "\u672a\u6307\u5b9a"}, {"label": "\u91cd\u7f6e\u6761\u4ef6", "value": "\u624b\u518c\u672a\u4e3a\u6b64\u89c6\u56fe\u8bb0\u8f7d stats_reset \u5b57\u6bb5"}], "sections": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["\u6bcf\u4e2a WAL \u53d1\u9001\u8fdb\u7a0b\u4e00\u884c\uff0c\u663e\u793a\u5411\u5176\u6240\u8fde\u63a5\u7684\u5907\u5e93\u8fdb\u884c\u590d\u5236\u7684\u7edf\u8ba1\u4fe1\u606f\u3002\u8be6\u89c1 pg_stat_replication \u3002"]}, {"title": "\u91c7\u96c6\u4e0e\u91cd\u7f6e\u8bed\u4e49", "paragraphs": ["\u91cd\u7f6e\u8303\u56f4\u548c\u53ef\u89c1\u6027\u8bf7\u53c2\u9605\u4e0b\u65b9\u540c\u7248\u672c\u7684\u7edf\u8ba1\u4fe1\u606f\u6536\u96c6\u4e0e\u89c6\u56fe\u6587\u6863\u3002\u4e0d\u6839\u636e\u5b57\u6bb5\u540d\u79f0\u63a8\u65ad\u5404\u5b57\u6bb5\u7684\u91cd\u7f6e\u89c4\u5219\u3002"]}, {"code": "SELECT replay_lag FROM pg_catalog.pg_stat_replication;", "title": "\u67e5\u770b\u6b64\u5b57\u6bb5", "paragraphs": 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"\u624b\u518c\u672a\u4e3a\u6b64\u89c6\u56fe\u8bb0\u8f7d stats_reset \u5b57\u6bb5"}], "tables": [], "zh_from": {"kind": "same-version-chinese-manual-with-source-derived-structured-summary", "manual": {"url": "/zh/docs/10/monitoring-stats.html#", "anchor": "", "column": "replay_lag", "locale": "zh-Hans", "version": "10", "build_id": 63, "page_key": "monitoring-stats.html", "extraction": "exact-catalog-field", "source_hash": "cf884834ed32c9ed9446bea488204432defca82b5fccd3075349b7b866653094", "source_revision": "unknown:rendered-translation-baseline", "translation_revision": "snapshot:sha256:62997ea80516ad012fbf6359de33f3b016b54c47e2df76e75606116b4baaf8e5"}, "body_sha256": "6ad5a90c45b955f748fc7b458e93f06671296d15def38cbf0e92e161b7fc396c", "runtime_rerun": false, "authored_translation": "source-derived-structured-summary", "source_facts_revision": "94a4b2528372458e5662c18d406629266667c437198160a18cdfd2c4a4d6eee9"}, "sections": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["\u6bcf\u4e2a WAL \u53d1\u9001\u8fdb\u7a0b\u4e00\u884c\uff0c\u663e\u793a\u5411\u5176\u6240\u8fde\u63a5\u7684\u5907\u5e93\u8fdb\u884c\u590d\u5236\u7684\u7edf\u8ba1\u4fe1\u606f\u3002\u8be6\u89c1 pg_stat_replication \u3002"]}, {"title": "\u91c7\u96c6\u4e0e\u91cd\u7f6e\u8bed\u4e49", "paragraphs": ["\u91cd\u7f6e\u8303\u56f4\u548c\u53ef\u89c1\u6027\u8bf7\u53c2\u9605\u4e0b\u65b9\u540c\u7248\u672c\u7684\u7edf\u8ba1\u4fe1\u606f\u6536\u96c6\u4e0e\u89c6\u56fe\u6587\u6863\u3002\u4e0d\u6839\u636e\u5b57\u6bb5\u540d\u79f0\u63a8\u65ad\u5404\u5b57\u6bb5\u7684\u91cd\u7f6e\u89c4\u5219\u3002"]}, {"code": "SELECT replay_lag FROM pg_catalog.pg_stat_replication;", "title": "\u67e5\u770b\u6b64\u5b57\u6bb5", "paragraphs": ["\u793a\u4f8b\u67e5\u8be2\uff1b\u4e0d\u8868\u793a\u5df2\u6267\u884c\uff0c\u4e5f\u4e0d\u63d0\u4f9b\u5b9e\u6d4b\u503c\u3002"]}], "description_zh": "\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002", "description_zh_html": "<p>pg_stat_replication.replay_lag \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_replication</code></dd><dt>\u5b57\u6bb5</dt><dd><code>replay_lag</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>interval</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002</p><p><a href=\"/zh/docs/10/monitoring-stats.html#\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>"}, "summary": "\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002", "version": "10", "link_map": {"/zh/docs/10/monitoring-stats.html": "/docs/10/monitoring-stats.html"}, "body_html": "<p>pg_stat_replication.replay_lag \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_replication</code></dd><dt>\u5b57\u6bb5</dt><dd><code>replay_lag</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>interval</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002</p><p><a href=\"/zh/docs/10/monitoring-stats.html\" rel=\"nofollow\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>", "body_sha256": "f0bd9f469d8b62572ce1284bbbc613c36cd8525897d0cb69311e861405606c0b", "content_hash": "297a9fe2f9f45a7e87ed56e5c1092057606c9a0673c5bc984753a101d0d98178", "source_database": "center", "source_revision": "94a4b2528372458e5662c18d406629266667c437198160a18cdfd2c4a4d6eee9"}, "signature": "SELECT replay_lag FROM pg_catalog.pg_stat_replication;", "tables_zh": [], "documented": true, "description": ["\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002"], "manual_html": "", "manual_path": "/docs/10/monitoring-stats.html", "sections_zh": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["\u6bcf\u4e2a WAL \u53d1\u9001\u8fdb\u7a0b\u4e00\u884c\uff0c\u663e\u793a\u5411\u5176\u6240\u8fde\u63a5\u7684\u5907\u5e93\u8fdb\u884c\u590d\u5236\u7684\u7edf\u8ba1\u4fe1\u606f\u3002\u8be6\u89c1 pg_stat_replication \u3002"]}, {"title": "\u91c7\u96c6\u4e0e\u91cd\u7f6e\u8bed\u4e49", "paragraphs": ["\u91cd\u7f6e\u8303\u56f4\u548c\u53ef\u89c1\u6027\u8bf7\u53c2\u9605\u4e0b\u65b9\u540c\u7248\u672c\u7684\u7edf\u8ba1\u4fe1\u606f\u6536\u96c6\u4e0e\u89c6\u56fe\u6587\u6863\u3002\u4e0d\u6839\u636e\u5b57\u6bb5\u540d\u79f0\u63a8\u65ad\u5404\u5b57\u6bb5\u7684\u91cd\u7f6e\u89c4\u5219\u3002"]}, {"code": "SELECT replay_lag FROM pg_catalog.pg_stat_replication;", "title": "\u67e5\u770b\u6b64\u5b57\u6bb5", "paragraphs": ["\u793a\u4f8b\u67e5\u8be2\uff1b\u4e0d\u8868\u793a\u5df2\u6267\u884c\uff0c\u4e5f\u4e0d\u63d0\u4f9b\u5b9e\u6d4b\u503c\u3002"]}], "source_only": false, "localization": {"status": "complete", "sources": [{"url": "/docs/10/monitoring-stats.html", "method": "same-major semantic node", "sha256": "881c50196a1774b6cbfd40977523b79f34cd079195f91024d1e3c322c763a8b5", "language": "zh", "matched_nodes": ["#MONITORING-STATS/div[6]/div[20]/div[1]/table[0]/tbody[2]/tr[16]/td[2]", "#MONITORING-STATS/div[6]/div[5]/div[1]/table[0]/tbody[2]/tr[1]/td[1]"]}], "language": "zh", "original_text": {"/versions/10/description/0": "Time elapsed between flushing recent WAL locally and receiving notification that this standby server has written, flushed and applied it. This can be used to gauge the delay that synchronous_commit level remote_apply incurred while committing if this server was configured as a synchronous standby.", "/versions/10/facts/0/label": "View", "/versions/10/facts/1/label": "Field", "/versions/10/facts/2/label": "SQL type", "/versions/10/facts/3/label": "Units named in the field definition", "/versions/10/facts/3/value": "Not specified", "/versions/10/facts/4/label": "Reset observation", "/versions/10/facts/4/value": "No stats_reset field is documented for this view", "/versions/10/related/0/label": "pg_stat_replication columns", "/versions/10/related/1/label": "Statistics collection and reset functions", "/versions/10/sections/0/title": "View semantics", "/versions/10/sections/1/title": "Collection and reset context", "/versions/10/sections/2/title": "Inspect this field", "/versions/10/sections/0/paragraphs/0": "One row per WAL sender process, showing statistics about replication to that sender's connected standby server. See pg_stat_replication for details.", "/versions/10/sections/1/paragraphs/0": "Read the same-version statistics collection and view documentation below for reset scope and visibility. No per-field reset rule is inferred from the field name.", "/versions/10/sections/2/paragraphs/0": "Example query; no execution result or measured value is asserted."}, "fallback_fields": [], "source_language": "en", "original_snapshot_sha256": "44b7e786173976a4624b4b6255a472eda0601a124d7de405ce0c627376489b8a", "canonical_center_text_hash": "297a9fe2f9f45a7e87ed56e5c1092057606c9a0673c5bc984753a101d0d98178"}, "description_zh": "\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002", "comparison_data": {"view": "pg_stat_replication", "field": "replay_lag", "sql_type": "interval", "units_mentioned": []}, "comparison_hash": "97052561d644196937057eebf96b5d5b3a43e3afacf041e0c1f4ceed6f66ea5e", "manual_language": "zh", "units_mentioned": [], "description_zh_html": "<p>pg_stat_replication.replay_lag \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_replication</code></dd><dt>\u5b57\u6bb5</dt><dd><code>replay_lag</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>interval</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002</p><p><a href=\"/zh/docs/10/monitoring-stats.html\" rel=\"nofollow\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>"}, "11": {"view": "pg_stat_replication", "facts": [{"label": "\u89c6\u56fe", "value": "pg_stat_replication"}, {"label": "\u5b57\u6bb5", "value": "replay_lag"}, {"label": "SQL \u7c7b\u578b", "value": "interval"}, {"label": "\u5b57\u6bb5\u5b9a\u4e49\u8bb0\u8f7d\u7684\u5355\u4f4d", "value": "\u672a\u6307\u5b9a"}, {"label": "\u91cd\u7f6e\u6761\u4ef6", "value": "\u624b\u518c\u672a\u4e3a\u6b64\u89c6\u56fe\u8bb0\u8f7d stats_reset \u5b57\u6bb5"}], "field": "replay_lag", "tables": [], "related": [{"url": "/wiki/catalog/pg_stat_replication/?v=11", "label": "pg_stat_replication \u5b57\u6bb5"}, {"url": "/docs/11/monitoring-stats.html", "label": "\u7edf\u8ba1\u6536\u96c6\u4e0e\u91cd\u7f6e\u51fd\u6570"}], "release": {"ref": "https://ftp.postgresql.org/pub/source/v11.22/postgresql-11.22.tar.bz2", "label": "11.22", "major": "11", "channel": "stable", "revision": "2cb7c97d7a0d7278851bbc9c61f467b69c094c72b81740b751108e7892ebe1f0"}, "sources": [{"url": "/docs/11/monitoring-stats.html#PG-STAT-REPLICATION-VIEW", "path": "monitoring-stats.html", "label": "PostgreSQL 11 English manual", "sha256": "8b7b421aabe5ecaae695cb42a270d7192bfe2bfbd1ac2aa756087c177f734600"}], "zh_from": {"kind": "same-version-chinese-manual-with-source-derived-structured-summary", "manual": {"url": "/zh/docs/11/monitoring-stats.html#", "anchor": "", "column": "replay_lag", "locale": "zh-Hans", "version": "11", "build_id": 64, "page_key": "monitoring-stats.html", "extraction": "exact-catalog-field", "source_hash": "2bd0ab0ada5d4a95c80dd511d5018532613c2753b6c2debc208355ba0cf80625", "source_revision": "unknown:rendered-translation-baseline", "translation_revision": "snapshot:sha256:ef5c7bc074acae9795db16e6b7482aea3b222bd4bcce0f76831332b97a21e8a1"}, "body_sha256": "5c34950304f587cbbdcfed29fca1f3f5e79c5d610f1e936942b677a42b02117c", "runtime_rerun": false, "authored_translation": "source-derived-structured-summary", "source_facts_revision": "2cb7c97d7a0d7278851bbc9c61f467b69c094c72b81740b751108e7892ebe1f0"}, "facts_zh": [{"label": "\u89c6\u56fe", "value": "pg_stat_replication"}, {"label": "\u5b57\u6bb5", "value": "replay_lag"}, {"label": "SQL \u7c7b\u578b", "value": "interval"}, {"label": "\u5b57\u6bb5\u5b9a\u4e49\u8bb0\u8f7d\u7684\u5355\u4f4d", "value": "\u672a\u6307\u5b9a"}, {"label": "\u91cd\u7f6e\u6761\u4ef6", "value": "\u624b\u518c\u672a\u4e3a\u6b64\u89c6\u56fe\u8bb0\u8f7d stats_reset \u5b57\u6bb5"}], "sections": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["\u6bcf\u4e2a WAL \u53d1\u9001\u8fdb\u7a0b\u4e00\u884c\uff0c\u663e\u793a\u5411\u5176\u6240\u8fde\u63a5\u7684\u5907\u5e93\u8fdb\u884c\u590d\u5236\u7684\u7edf\u8ba1\u4fe1\u606f\u3002\u8be6\u89c1 pg_stat_replication \u3002"]}, {"title": "\u91c7\u96c6\u4e0e\u91cd\u7f6e\u8bed\u4e49", "paragraphs": ["\u91cd\u7f6e\u8303\u56f4\u548c\u53ef\u89c1\u6027\u8bf7\u53c2\u9605\u4e0b\u65b9\u540c\u7248\u672c\u7684\u7edf\u8ba1\u4fe1\u606f\u6536\u96c6\u4e0e\u89c6\u56fe\u6587\u6863\u3002\u4e0d\u6839\u636e\u5b57\u6bb5\u540d\u79f0\u63a8\u65ad\u5404\u5b57\u6bb5\u7684\u91cd\u7f6e\u89c4\u5219\u3002"]}, {"code": "SELECT replay_lag FROM pg_catalog.pg_stat_replication;", "title": "\u67e5\u770b\u6b64\u5b57\u6bb5", "paragraphs": ["\u793a\u4f8b\u67e5\u8be2\uff1b\u4e0d\u8868\u793a\u5df2\u6267\u884c\uff0c\u4e5f\u4e0d\u63d0\u4f9b\u5b9e\u6d4b\u503c\u3002"]}], "sql_type": "interval", "center_zh": {"title": "pg_stat_replication.replay_lag", "locale": "zh-Hans", "source": {"key": "pg_stat_replication-replay_lag", "locale": "zh-Hans", "version": "11", "text_hash": "8e4f0530f1a04366953cd555529596849a804a73cf18d3544615ce70fba08b4c", "collection": "metric", "dataset_hash": "7c31b524dfe136022d39a6ae8dcfac6b3bbd5f8fdaf422536599981252aff0c9", "source_database": "center", "source_revision": 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"snapshot:sha256:ef5c7bc074acae9795db16e6b7482aea3b222bd4bcce0f76831332b97a21e8a1"}, "body_sha256": "5c34950304f587cbbdcfed29fca1f3f5e79c5d610f1e936942b677a42b02117c", "runtime_rerun": false, "authored_translation": "source-derived-structured-summary", "source_facts_revision": "2cb7c97d7a0d7278851bbc9c61f467b69c094c72b81740b751108e7892ebe1f0"}, "sections": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["\u6bcf\u4e2a WAL \u53d1\u9001\u8fdb\u7a0b\u4e00\u884c\uff0c\u663e\u793a\u5411\u5176\u6240\u8fde\u63a5\u7684\u5907\u5e93\u8fdb\u884c\u590d\u5236\u7684\u7edf\u8ba1\u4fe1\u606f\u3002\u8be6\u89c1 pg_stat_replication \u3002"]}, {"title": "\u91c7\u96c6\u4e0e\u91cd\u7f6e\u8bed\u4e49", "paragraphs": ["\u91cd\u7f6e\u8303\u56f4\u548c\u53ef\u89c1\u6027\u8bf7\u53c2\u9605\u4e0b\u65b9\u540c\u7248\u672c\u7684\u7edf\u8ba1\u4fe1\u606f\u6536\u96c6\u4e0e\u89c6\u56fe\u6587\u6863\u3002\u4e0d\u6839\u636e\u5b57\u6bb5\u540d\u79f0\u63a8\u65ad\u5404\u5b57\u6bb5\u7684\u91cd\u7f6e\u89c4\u5219\u3002"]}, {"code": "SELECT replay_lag FROM pg_catalog.pg_stat_replication;", "title": "\u67e5\u770b\u6b64\u5b57\u6bb5", "paragraphs": ["\u793a\u4f8b\u67e5\u8be2\uff1b\u4e0d\u8868\u793a\u5df2\u6267\u884c\uff0c\u4e5f\u4e0d\u63d0\u4f9b\u5b9e\u6d4b\u503c\u3002"]}], "description_zh": "\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002", "description_zh_html": "<p>pg_stat_replication.replay_lag \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_replication</code></dd><dt>\u5b57\u6bb5</dt><dd><code>replay_lag</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>interval</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002</p><p><a href=\"/zh/docs/11/monitoring-stats.html#\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>"}, "summary": "\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002", "version": "11", "link_map": {"/zh/docs/11/monitoring-stats.html": "/docs/11/monitoring-stats.html"}, "body_html": "<p>pg_stat_replication.replay_lag \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_replication</code></dd><dt>\u5b57\u6bb5</dt><dd><code>replay_lag</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>interval</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002</p><p><a href=\"/zh/docs/11/monitoring-stats.html\" rel=\"nofollow\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>", "body_sha256": "8f93917a3b324b98908cd7790ffcffcfb9f191e9e7ceeb592fcec3ab1fe62766", "content_hash": "8e4f0530f1a04366953cd555529596849a804a73cf18d3544615ce70fba08b4c", "source_database": "center", "source_revision": "2cb7c97d7a0d7278851bbc9c61f467b69c094c72b81740b751108e7892ebe1f0"}, "signature": "SELECT replay_lag FROM pg_catalog.pg_stat_replication;", "tables_zh": [], "documented": true, "description": ["\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002"], "manual_html": "", "manual_path": "/docs/11/monitoring-stats.html", "sections_zh": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["\u6bcf\u4e2a WAL \u53d1\u9001\u8fdb\u7a0b\u4e00\u884c\uff0c\u663e\u793a\u5411\u5176\u6240\u8fde\u63a5\u7684\u5907\u5e93\u8fdb\u884c\u590d\u5236\u7684\u7edf\u8ba1\u4fe1\u606f\u3002\u8be6\u89c1 pg_stat_replication \u3002"]}, {"title": "\u91c7\u96c6\u4e0e\u91cd\u7f6e\u8bed\u4e49", "paragraphs": ["\u91cd\u7f6e\u8303\u56f4\u548c\u53ef\u89c1\u6027\u8bf7\u53c2\u9605\u4e0b\u65b9\u540c\u7248\u672c\u7684\u7edf\u8ba1\u4fe1\u606f\u6536\u96c6\u4e0e\u89c6\u56fe\u6587\u6863\u3002\u4e0d\u6839\u636e\u5b57\u6bb5\u540d\u79f0\u63a8\u65ad\u5404\u5b57\u6bb5\u7684\u91cd\u7f6e\u89c4\u5219\u3002"]}, {"code": "SELECT replay_lag FROM pg_catalog.pg_stat_replication;", "title": "\u67e5\u770b\u6b64\u5b57\u6bb5", "paragraphs": ["\u793a\u4f8b\u67e5\u8be2\uff1b\u4e0d\u8868\u793a\u5df2\u6267\u884c\uff0c\u4e5f\u4e0d\u63d0\u4f9b\u5b9e\u6d4b\u503c\u3002"]}], "source_only": false, "localization": {"status": "complete", "sources": [{"url": "/docs/11/monitoring-stats.html", "method": "same-major semantic node", "sha256": "0f94440120a340dbcbbfec4d9fd6ea8ad93b9671f759fe80a4f373ba248c864e", "language": "zh", "matched_nodes": ["#MONITORING-STATS/div[6]/div[20]/div[1]/table[0]/tbody[2]/tr[16]/td[2]", "#MONITORING-STATS/div[6]/div[5]/div[1]/table[0]/tbody[2]/tr[1]/td[1]"]}], "language": "zh", "original_text": {"/versions/11/description/0": "Time elapsed between flushing recent WAL locally and receiving notification that this standby server has written, flushed and applied it. This can be used to gauge the delay that synchronous_commit level remote_apply incurred while committing if this server was configured as a synchronous standby.", "/versions/11/facts/0/label": "View", "/versions/11/facts/1/label": "Field", "/versions/11/facts/2/label": "SQL type", "/versions/11/facts/3/label": "Units named in the field definition", "/versions/11/facts/3/value": "Not specified", "/versions/11/facts/4/label": "Reset observation", "/versions/11/facts/4/value": "No stats_reset field is documented for this view", "/versions/11/related/0/label": "pg_stat_replication columns", "/versions/11/related/1/label": "Statistics collection and reset functions", "/versions/11/sections/0/title": "View semantics", "/versions/11/sections/1/title": "Collection and reset context", "/versions/11/sections/2/title": "Inspect this field", "/versions/11/sections/0/paragraphs/0": "One row per WAL sender process, showing statistics about replication to that sender's connected standby server. See pg_stat_replication for details.", "/versions/11/sections/1/paragraphs/0": "Read the same-version statistics collection and view documentation below for reset scope and visibility. No per-field reset rule is inferred from the field name.", "/versions/11/sections/2/paragraphs/0": "Example query; no execution result or measured value is asserted."}, "fallback_fields": [], "source_language": "en", "original_snapshot_sha256": "25eaf212597162161857a53b1a37afc3a1cd6f6928dfce20531228b27c3af072", "canonical_center_text_hash": "8e4f0530f1a04366953cd555529596849a804a73cf18d3544615ce70fba08b4c"}, "description_zh": "\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002", "comparison_data": {"view": "pg_stat_replication", "field": "replay_lag", "sql_type": "interval", "units_mentioned": []}, "comparison_hash": "97052561d644196937057eebf96b5d5b3a43e3afacf041e0c1f4ceed6f66ea5e", "manual_language": "zh", "units_mentioned": [], "description_zh_html": "<p>pg_stat_replication.replay_lag \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_replication</code></dd><dt>\u5b57\u6bb5</dt><dd><code>replay_lag</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>interval</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002</p><p><a href=\"/zh/docs/11/monitoring-stats.html\" rel=\"nofollow\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>"}, "12": {"view": "pg_stat_replication", "facts": [{"label": "\u89c6\u56fe", "value": "pg_stat_replication"}, {"label": "\u5b57\u6bb5", "value": "replay_lag"}, {"label": "SQL \u7c7b\u578b", "value": "interval"}, {"label": "\u5b57\u6bb5\u5b9a\u4e49\u8bb0\u8f7d\u7684\u5355\u4f4d", "value": "\u672a\u6307\u5b9a"}, {"label": "\u91cd\u7f6e\u6761\u4ef6", "value": "\u624b\u518c\u672a\u4e3a\u6b64\u89c6\u56fe\u8bb0\u8f7d stats_reset \u5b57\u6bb5"}], "field": "replay_lag", "tables": [], "related": [{"url": "/wiki/catalog/pg_stat_replication/?v=12", "label": "pg_stat_replication \u5b57\u6bb5"}, {"url": "/docs/12/monitoring-stats.html", "label": "\u7edf\u8ba1\u6536\u96c6\u4e0e\u91cd\u7f6e\u51fd\u6570"}], "release": {"ref": "https://ftp.postgresql.org/pub/source/v12.22/postgresql-12.22.tar.bz2", "label": "12.22", "major": "12", "channel": "stable", "revision": "8df3c0474782589d3c6f374b5133b1bd14d168086edbc13c6e72e67dd4527a3b"}, "sources": [{"url": "/docs/12/monitoring-stats.html#PG-STAT-REPLICATION-VIEW", "path": "monitoring-stats.html", "label": "PostgreSQL 12 English manual", "sha256": "3a764eaa784efc0eed1081cdfc2bf313c91bd17122d66dd16055d8b640320699"}], "zh_from": {"kind": "same-version-chinese-manual-with-source-derived-structured-summary", "manual": {"url": "/zh/docs/12/monitoring-stats.html#", "anchor": "", "column": "replay_lag", "locale": "zh-Hans", "version": "12", "build_id": 65, "page_key": "monitoring-stats.html", "extraction": "exact-catalog-field", "source_hash": "1807d9852353a1af2b64d546fb3be93143b4831734c8d432737488e3037ac9f1", "source_revision": "unknown:rendered-translation-baseline", "translation_revision": "snapshot:sha256:86d2ff781f93e1de17122ebc514d5e64fcb63fed15941f496d7e146c6dcc7a49"}, "body_sha256": "b52f55e0a66da181d2b7a68560e5999875f23d0ba50237f88c48c0de9ae39ebf", "runtime_rerun": false, "authored_translation": "source-derived-structured-summary", "source_facts_revision": "8df3c0474782589d3c6f374b5133b1bd14d168086edbc13c6e72e67dd4527a3b"}, "facts_zh": [{"label": "\u89c6\u56fe", "value": "pg_stat_replication"}, {"label": "\u5b57\u6bb5", "value": "replay_lag"}, {"label": "SQL \u7c7b\u578b", "value": "interval"}, {"label": "\u5b57\u6bb5\u5b9a\u4e49\u8bb0\u8f7d\u7684\u5355\u4f4d", "value": "\u672a\u6307\u5b9a"}, {"label": "\u91cd\u7f6e\u6761\u4ef6", "value": "\u624b\u518c\u672a\u4e3a\u6b64\u89c6\u56fe\u8bb0\u8f7d stats_reset \u5b57\u6bb5"}], "sections": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["\u6bcf\u4e2a WAL \u53d1\u9001\u8fdb\u7a0b\u4e00\u884c\uff0c\u663e\u793a\u5411\u5176\u6240\u8fde\u63a5\u7684\u5907\u5e93\u8fdb\u884c\u590d\u5236\u7684\u7edf\u8ba1\u4fe1\u606f\u3002\u8be6\u89c1 pg_stat_replication \u3002"]}, {"title": "\u91c7\u96c6\u4e0e\u91cd\u7f6e\u8bed\u4e49", "paragraphs": ["\u91cd\u7f6e\u8303\u56f4\u548c\u53ef\u89c1\u6027\u8bf7\u53c2\u9605\u4e0b\u65b9\u540c\u7248\u672c\u7684\u7edf\u8ba1\u4fe1\u606f\u6536\u96c6\u4e0e\u89c6\u56fe\u6587\u6863\u3002\u4e0d\u6839\u636e\u5b57\u6bb5\u540d\u79f0\u63a8\u65ad\u5404\u5b57\u6bb5\u7684\u91cd\u7f6e\u89c4\u5219\u3002"]}, {"code": "SELECT replay_lag FROM pg_catalog.pg_stat_replication;", "title": "\u67e5\u770b\u6b64\u5b57\u6bb5", "paragraphs": ["\u793a\u4f8b\u67e5\u8be2\uff1b\u4e0d\u8868\u793a\u5df2\u6267\u884c\uff0c\u4e5f\u4e0d\u63d0\u4f9b\u5b9e\u6d4b\u503c\u3002"]}], "sql_type": "interval", "center_zh": {"title": "pg_stat_replication.replay_lag", "locale": "zh-Hans", "source": {"key": "pg_stat_replication-replay_lag", "locale": "zh-Hans", "version": "12", "text_hash": "5a285fc5d8014139edd8e28dbbeeb85ceb180c8a1a0c8d0835a236c599140d6a", "collection": "metric", "dataset_hash": "7c31b524dfe136022d39a6ae8dcfac6b3bbd5f8fdaf422536599981252aff0c9", "source_database": "center", "source_revision": 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"snapshot:sha256:86d2ff781f93e1de17122ebc514d5e64fcb63fed15941f496d7e146c6dcc7a49"}, "body_sha256": "b52f55e0a66da181d2b7a68560e5999875f23d0ba50237f88c48c0de9ae39ebf", "runtime_rerun": false, "authored_translation": "source-derived-structured-summary", "source_facts_revision": "8df3c0474782589d3c6f374b5133b1bd14d168086edbc13c6e72e67dd4527a3b"}, "sections": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["\u6bcf\u4e2a WAL \u53d1\u9001\u8fdb\u7a0b\u4e00\u884c\uff0c\u663e\u793a\u5411\u5176\u6240\u8fde\u63a5\u7684\u5907\u5e93\u8fdb\u884c\u590d\u5236\u7684\u7edf\u8ba1\u4fe1\u606f\u3002\u8be6\u89c1 pg_stat_replication \u3002"]}, {"title": "\u91c7\u96c6\u4e0e\u91cd\u7f6e\u8bed\u4e49", "paragraphs": ["\u91cd\u7f6e\u8303\u56f4\u548c\u53ef\u89c1\u6027\u8bf7\u53c2\u9605\u4e0b\u65b9\u540c\u7248\u672c\u7684\u7edf\u8ba1\u4fe1\u606f\u6536\u96c6\u4e0e\u89c6\u56fe\u6587\u6863\u3002\u4e0d\u6839\u636e\u5b57\u6bb5\u540d\u79f0\u63a8\u65ad\u5404\u5b57\u6bb5\u7684\u91cd\u7f6e\u89c4\u5219\u3002"]}, {"code": "SELECT replay_lag FROM pg_catalog.pg_stat_replication;", "title": "\u67e5\u770b\u6b64\u5b57\u6bb5", "paragraphs": ["\u793a\u4f8b\u67e5\u8be2\uff1b\u4e0d\u8868\u793a\u5df2\u6267\u884c\uff0c\u4e5f\u4e0d\u63d0\u4f9b\u5b9e\u6d4b\u503c\u3002"]}], "description_zh": "\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002", "description_zh_html": "<p>pg_stat_replication.replay_lag \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_replication</code></dd><dt>\u5b57\u6bb5</dt><dd><code>replay_lag</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>interval</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002</p><p><a href=\"/zh/docs/12/monitoring-stats.html#\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>"}, "summary": "\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002", "version": "12", "link_map": {"/zh/docs/12/monitoring-stats.html": "/docs/12/monitoring-stats.html"}, "body_html": "<p>pg_stat_replication.replay_lag \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_replication</code></dd><dt>\u5b57\u6bb5</dt><dd><code>replay_lag</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>interval</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002</p><p><a href=\"/zh/docs/12/monitoring-stats.html\" rel=\"nofollow\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>", "body_sha256": "0dffcefcf90f4fe198b7baa37786cc051482a86992ca3068028c35a2b8bd02b4", "content_hash": "5a285fc5d8014139edd8e28dbbeeb85ceb180c8a1a0c8d0835a236c599140d6a", "source_database": "center", "source_revision": "8df3c0474782589d3c6f374b5133b1bd14d168086edbc13c6e72e67dd4527a3b"}, "signature": "SELECT replay_lag FROM pg_catalog.pg_stat_replication;", "tables_zh": [], "documented": true, "description": ["\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002"], "manual_html": "", "manual_path": "/docs/12/monitoring-stats.html", "sections_zh": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["\u6bcf\u4e2a WAL \u53d1\u9001\u8fdb\u7a0b\u4e00\u884c\uff0c\u663e\u793a\u5411\u5176\u6240\u8fde\u63a5\u7684\u5907\u5e93\u8fdb\u884c\u590d\u5236\u7684\u7edf\u8ba1\u4fe1\u606f\u3002\u8be6\u89c1 pg_stat_replication \u3002"]}, {"title": "\u91c7\u96c6\u4e0e\u91cd\u7f6e\u8bed\u4e49", "paragraphs": ["\u91cd\u7f6e\u8303\u56f4\u548c\u53ef\u89c1\u6027\u8bf7\u53c2\u9605\u4e0b\u65b9\u540c\u7248\u672c\u7684\u7edf\u8ba1\u4fe1\u606f\u6536\u96c6\u4e0e\u89c6\u56fe\u6587\u6863\u3002\u4e0d\u6839\u636e\u5b57\u6bb5\u540d\u79f0\u63a8\u65ad\u5404\u5b57\u6bb5\u7684\u91cd\u7f6e\u89c4\u5219\u3002"]}, {"code": "SELECT replay_lag FROM pg_catalog.pg_stat_replication;", "title": "\u67e5\u770b\u6b64\u5b57\u6bb5", "paragraphs": ["\u793a\u4f8b\u67e5\u8be2\uff1b\u4e0d\u8868\u793a\u5df2\u6267\u884c\uff0c\u4e5f\u4e0d\u63d0\u4f9b\u5b9e\u6d4b\u503c\u3002"]}], "source_only": false, "localization": {"status": "complete", "sources": [{"url": "/docs/12/monitoring-stats.html", "method": "same-major semantic node", "sha256": "d9fccd3a149dcb1b042346f59f216885cbd5a1cef552dae403a74da45af66cd0", "language": "zh", "matched_nodes": ["#MONITORING-STATS/div[6]/div[21]/div[1]/table[0]/tbody[2]/tr[16]/td[2]", "#MONITORING-STATS/div[6]/div[6]/div[1]/table[0]/tbody[2]/tr[1]/td[1]"]}], "language": "zh", "original_text": {"/versions/12/description/0": "Time elapsed between flushing recent WAL locally and receiving notification that this standby server has written, flushed and applied it. This can be used to gauge the delay that synchronous_commit level remote_apply incurred while committing if this server was configured as a synchronous standby.", "/versions/12/facts/0/label": "View", "/versions/12/facts/1/label": "Field", "/versions/12/facts/2/label": "SQL type", "/versions/12/facts/3/label": "Units named in the field definition", "/versions/12/facts/3/value": "Not specified", "/versions/12/facts/4/label": "Reset observation", "/versions/12/facts/4/value": "No stats_reset field is documented for this view", "/versions/12/related/0/label": "pg_stat_replication columns", "/versions/12/related/1/label": "Statistics collection and reset functions", "/versions/12/sections/0/title": "View semantics", "/versions/12/sections/1/title": "Collection and reset context", "/versions/12/sections/2/title": "Inspect this field", "/versions/12/sections/0/paragraphs/0": "One row per WAL sender process, showing statistics about replication to that sender's connected standby server. See pg_stat_replication for details.", "/versions/12/sections/1/paragraphs/0": "Read the same-version statistics collection and view documentation below for reset scope and visibility. No per-field reset rule is inferred from the field name.", "/versions/12/sections/2/paragraphs/0": "Example query; no execution result or measured value is asserted."}, "fallback_fields": [], "source_language": "en", "original_snapshot_sha256": "1a751a8067f10ab559ee64b43075c2a56788d90feb525bc40198c75323ca864b", "canonical_center_text_hash": "5a285fc5d8014139edd8e28dbbeeb85ceb180c8a1a0c8d0835a236c599140d6a"}, "description_zh": "\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002", "comparison_data": {"view": "pg_stat_replication", "field": "replay_lag", "sql_type": "interval", "units_mentioned": []}, "comparison_hash": "97052561d644196937057eebf96b5d5b3a43e3afacf041e0c1f4ceed6f66ea5e", "manual_language": "zh", "units_mentioned": [], "description_zh_html": "<p>pg_stat_replication.replay_lag \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_replication</code></dd><dt>\u5b57\u6bb5</dt><dd><code>replay_lag</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>interval</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002</p><p><a href=\"/zh/docs/12/monitoring-stats.html\" rel=\"nofollow\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>"}, "13": {"view": "pg_stat_replication", "facts": [{"label": "\u89c6\u56fe", "value": "pg_stat_replication"}, {"label": "\u5b57\u6bb5", "value": "replay_lag"}, {"label": "SQL \u7c7b\u578b", "value": "interval"}, {"label": "\u5b57\u6bb5\u5b9a\u4e49\u8bb0\u8f7d\u7684\u5355\u4f4d", "value": "\u672a\u6307\u5b9a"}, {"label": "\u91cd\u7f6e\u6761\u4ef6", "value": "\u624b\u518c\u672a\u4e3a\u6b64\u89c6\u56fe\u8bb0\u8f7d stats_reset \u5b57\u6bb5"}], "field": "replay_lag", "tables": [], "related": [{"url": "/wiki/catalog/pg_stat_replication/?v=13", "label": "pg_stat_replication \u5b57\u6bb5"}, {"url": "/docs/13/monitoring-stats.html", "label": "\u7edf\u8ba1\u6536\u96c6\u4e0e\u91cd\u7f6e\u51fd\u6570"}], "release": {"ref": "https://ftp.postgresql.org/pub/source/v13.23/postgresql-13.23.tar.bz2", "label": "13.23", "major": "13", "channel": "stable", "revision": "6ec3c82726af92b7dec873fa1cdf881eca92a4219787dfad05acb6b10e041fd6"}, "sources": [{"url": "/docs/13/monitoring-stats.html#PG-STAT-REPLICATION-VIEW", "path": "monitoring-stats.html", "label": "PostgreSQL 13 English manual", "sha256": "a8ec0d199d592259f260a41ccb2821e582cd6dae1014a784e1e86203740afcb0"}], "zh_from": {"kind": "same-version-chinese-manual-with-source-derived-structured-summary", "manual": {"url": "/zh/docs/13/monitoring-stats.html#", "anchor": "", "column": "replay_lag", "locale": "zh-Hans", "version": "13", "build_id": 66, "page_key": "monitoring-stats.html", "extraction": "exact-catalog-field", "source_hash": "57373e7034db8002ff131250ff4fe83a8251455fad5580597598b0863a245ece", "source_revision": "unknown:rendered-translation-baseline", "translation_revision": "snapshot:sha256:a13a825c39f0268ef1cfe9137e283e38d0da73b2d7894f0733c7b26372a4f6a4"}, "body_sha256": "2ad88304009130db3d1838665bab2cadeeebc81c9493ea35a2c6ab00874907b7", "runtime_rerun": false, "authored_translation": "source-derived-structured-summary", "source_facts_revision": "6ec3c82726af92b7dec873fa1cdf881eca92a4219787dfad05acb6b10e041fd6"}, "facts_zh": [{"label": "\u89c6\u56fe", "value": "pg_stat_replication"}, {"label": "\u5b57\u6bb5", "value": "replay_lag"}, {"label": "SQL \u7c7b\u578b", "value": "interval"}, {"label": "\u5b57\u6bb5\u5b9a\u4e49\u8bb0\u8f7d\u7684\u5355\u4f4d", "value": "\u672a\u6307\u5b9a"}, {"label": "\u91cd\u7f6e\u6761\u4ef6", "value": "\u624b\u518c\u672a\u4e3a\u6b64\u89c6\u56fe\u8bb0\u8f7d stats_reset \u5b57\u6bb5"}], "sections": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["pg_stat_replication \u89c6\u56fe\u4e3a\u6bcf\u4e2a WAL \u53d1\u9001\u8fdb\u7a0b\u5305\u542b\u4e00\u884c\uff0c\u663e\u793a\u6709\u5173\u590d\u5236\u5230\u8be5\u53d1\u9001\u8fdb\u7a0b\u6240\u8fde\u63a5\u5907\u5e93\u7684\u7edf\u8ba1\u4fe1\u606f\u3002\u8fd9\u91cc\u53ea\u5217\u51fa\u76f4\u63a5\u8fde\u63a5\u7684\u5907\u5e93\uff1b\u4e0d\u5305\u542b\u4e0b\u6e38\u5907\u5e93\u7684\u4fe1\u606f\u3002"]}, {"title": "\u91c7\u96c6\u4e0e\u91cd\u7f6e\u8bed\u4e49", "paragraphs": ["\u91cd\u7f6e\u8303\u56f4\u548c\u53ef\u89c1\u6027\u8bf7\u53c2\u9605\u4e0b\u65b9\u540c\u7248\u672c\u7684\u7edf\u8ba1\u4fe1\u606f\u6536\u96c6\u4e0e\u89c6\u56fe\u6587\u6863\u3002\u4e0d\u6839\u636e\u5b57\u6bb5\u540d\u79f0\u63a8\u65ad\u5404\u5b57\u6bb5\u7684\u91cd\u7f6e\u89c4\u5219\u3002"]}, {"code": "SELECT replay_lag FROM pg_catalog.pg_stat_replication;", "title": "\u67e5\u770b\u6b64\u5b57\u6bb5", "paragraphs": ["\u793a\u4f8b\u67e5\u8be2\uff1b\u4e0d\u8868\u793a\u5df2\u6267\u884c\uff0c\u4e5f\u4e0d\u63d0\u4f9b\u5b9e\u6d4b\u503c\u3002"]}], "sql_type": "interval", "center_zh": {"title": "pg_stat_replication.replay_lag", "locale": "zh-Hans", "source": {"key": "pg_stat_replication-replay_lag", "locale": "zh-Hans", "version": "13", "text_hash": "bc2d42a533fa1fb66436db61f654d9e63253aabcd3ff9382cb2ea954bbc0ba23", "collection": "metric", "dataset_hash": "7c31b524dfe136022d39a6ae8dcfac6b3bbd5f8fdaf422536599981252aff0c9", "source_database": "center", "source_revision": "6ec3c82726af92b7dec873fa1cdf881eca92a4219787dfad05acb6b10e041fd6"}, "payload": {"facts": [{"label": "\u89c6\u56fe", "value": "pg_stat_replication"}, {"label": "\u5b57\u6bb5", "value": "replay_lag"}, {"label": "SQL \u7c7b\u578b", "value": "interval"}, {"label": "\u5b57\u6bb5\u5b9a\u4e49\u8bb0\u8f7d\u7684\u5355\u4f4d", "value": "\u672a\u6307\u5b9a"}, {"label": "\u91cd\u7f6e\u6761\u4ef6", "value": "\u624b\u518c\u672a\u4e3a\u6b64\u89c6\u56fe\u8bb0\u8f7d stats_reset \u5b57\u6bb5"}], "tables": [], "zh_from": {"kind": "same-version-chinese-manual-with-source-derived-structured-summary", "manual": {"url": "/zh/docs/13/monitoring-stats.html#", "anchor": "", "column": "replay_lag", "locale": "zh-Hans", "version": "13", "build_id": 66, "page_key": "monitoring-stats.html", "extraction": "exact-catalog-field", "source_hash": "57373e7034db8002ff131250ff4fe83a8251455fad5580597598b0863a245ece", "source_revision": "unknown:rendered-translation-baseline", "translation_revision": "snapshot:sha256:a13a825c39f0268ef1cfe9137e283e38d0da73b2d7894f0733c7b26372a4f6a4"}, "body_sha256": "2ad88304009130db3d1838665bab2cadeeebc81c9493ea35a2c6ab00874907b7", "runtime_rerun": false, "authored_translation": "source-derived-structured-summary", "source_facts_revision": "6ec3c82726af92b7dec873fa1cdf881eca92a4219787dfad05acb6b10e041fd6"}, "sections": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["pg_stat_replication \u89c6\u56fe\u4e3a\u6bcf\u4e2a WAL \u53d1\u9001\u8fdb\u7a0b\u5305\u542b\u4e00\u884c\uff0c\u663e\u793a\u6709\u5173\u590d\u5236\u5230\u8be5\u53d1\u9001\u8fdb\u7a0b\u6240\u8fde\u63a5\u5907\u5e93\u7684\u7edf\u8ba1\u4fe1\u606f\u3002\u8fd9\u91cc\u53ea\u5217\u51fa\u76f4\u63a5\u8fde\u63a5\u7684\u5907\u5e93\uff1b\u4e0d\u5305\u542b\u4e0b\u6e38\u5907\u5e93\u7684\u4fe1\u606f\u3002"]}, {"title": "\u91c7\u96c6\u4e0e\u91cd\u7f6e\u8bed\u4e49", "paragraphs": ["\u91cd\u7f6e\u8303\u56f4\u548c\u53ef\u89c1\u6027\u8bf7\u53c2\u9605\u4e0b\u65b9\u540c\u7248\u672c\u7684\u7edf\u8ba1\u4fe1\u606f\u6536\u96c6\u4e0e\u89c6\u56fe\u6587\u6863\u3002\u4e0d\u6839\u636e\u5b57\u6bb5\u540d\u79f0\u63a8\u65ad\u5404\u5b57\u6bb5\u7684\u91cd\u7f6e\u89c4\u5219\u3002"]}, {"code": "SELECT replay_lag FROM pg_catalog.pg_stat_replication;", "title": "\u67e5\u770b\u6b64\u5b57\u6bb5", "paragraphs": ["\u793a\u4f8b\u67e5\u8be2\uff1b\u4e0d\u8868\u793a\u5df2\u6267\u884c\uff0c\u4e5f\u4e0d\u63d0\u4f9b\u5b9e\u6d4b\u503c\u3002"]}], "description_zh": "\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002", "description_zh_html": "<p>pg_stat_replication.replay_lag \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_replication</code></dd><dt>\u5b57\u6bb5</dt><dd><code>replay_lag</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>interval</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002</p><p><a href=\"/zh/docs/13/monitoring-stats.html#\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>"}, "summary": "\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002", "version": "13", "link_map": {"/zh/docs/13/monitoring-stats.html": "/docs/13/monitoring-stats.html"}, "body_html": "<p>pg_stat_replication.replay_lag \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_replication</code></dd><dt>\u5b57\u6bb5</dt><dd><code>replay_lag</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>interval</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002</p><p><a href=\"/zh/docs/13/monitoring-stats.html\" rel=\"nofollow\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>", "body_sha256": "fff13fd1cd05ebb765adc2910767db1cbe6967dacf3376cde2bd71a88c73ede2", "content_hash": "bc2d42a533fa1fb66436db61f654d9e63253aabcd3ff9382cb2ea954bbc0ba23", "source_database": "center", "source_revision": "6ec3c82726af92b7dec873fa1cdf881eca92a4219787dfad05acb6b10e041fd6"}, "signature": "SELECT replay_lag FROM pg_catalog.pg_stat_replication;", "tables_zh": [], "documented": true, "description": ["\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002"], "manual_html": "", "manual_path": "/docs/13/monitoring-stats.html", "sections_zh": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["pg_stat_replication \u89c6\u56fe\u4e3a\u6bcf\u4e2a WAL \u53d1\u9001\u8fdb\u7a0b\u5305\u542b\u4e00\u884c\uff0c\u663e\u793a\u6709\u5173\u590d\u5236\u5230\u8be5\u53d1\u9001\u8fdb\u7a0b\u6240\u8fde\u63a5\u5907\u5e93\u7684\u7edf\u8ba1\u4fe1\u606f\u3002\u8fd9\u91cc\u53ea\u5217\u51fa\u76f4\u63a5\u8fde\u63a5\u7684\u5907\u5e93\uff1b\u4e0d\u5305\u542b\u4e0b\u6e38\u5907\u5e93\u7684\u4fe1\u606f\u3002"]}, {"title": "\u91c7\u96c6\u4e0e\u91cd\u7f6e\u8bed\u4e49", "paragraphs": ["\u91cd\u7f6e\u8303\u56f4\u548c\u53ef\u89c1\u6027\u8bf7\u53c2\u9605\u4e0b\u65b9\u540c\u7248\u672c\u7684\u7edf\u8ba1\u4fe1\u606f\u6536\u96c6\u4e0e\u89c6\u56fe\u6587\u6863\u3002\u4e0d\u6839\u636e\u5b57\u6bb5\u540d\u79f0\u63a8\u65ad\u5404\u5b57\u6bb5\u7684\u91cd\u7f6e\u89c4\u5219\u3002"]}, {"code": "SELECT replay_lag FROM pg_catalog.pg_stat_replication;", "title": "\u67e5\u770b\u6b64\u5b57\u6bb5", "paragraphs": ["\u793a\u4f8b\u67e5\u8be2\uff1b\u4e0d\u8868\u793a\u5df2\u6267\u884c\uff0c\u4e5f\u4e0d\u63d0\u4f9b\u5b9e\u6d4b\u503c\u3002"]}], "source_only": false, "localization": {"status": "complete", "sources": [{"url": "/docs/13/monitoring-stats.html", "method": "same-major semantic node", "sha256": "1afff4ad1a4bc0c7e04a62d13adebcc1d39c30aca969618fab0cca8d0a115a96", "language": "zh", "matched_nodes": ["#MONITORING-STATS/div[8]/div[3]/div[1]/table[0]/tbody[2]/tr[16]/td[0]/p[1]", "#MONITORING-STATS/div[8]/p[2]"]}], "language": "zh", "original_text": {"/versions/13/description/0": "Time elapsed between flushing recent WAL locally and receiving notification that this standby server has written, flushed and applied it. This can be used to gauge the delay that synchronous_commit level remote_apply incurred while committing if this server was configured as a synchronous standby.", "/versions/13/facts/0/label": "View", "/versions/13/facts/1/label": "Field", "/versions/13/facts/2/label": "SQL type", "/versions/13/facts/3/label": "Units named in the field definition", "/versions/13/facts/3/value": "Not specified", "/versions/13/facts/4/label": "Reset observation", "/versions/13/facts/4/value": "No stats_reset field is documented for this view", "/versions/13/related/0/label": "pg_stat_replication columns", "/versions/13/related/1/label": "Statistics collection and reset functions", "/versions/13/sections/0/title": "View semantics", "/versions/13/sections/1/title": "Collection and reset context", "/versions/13/sections/2/title": "Inspect this field", "/versions/13/sections/0/paragraphs/0": "The pg_stat_replication view will contain one row per WAL sender process, showing statistics about replication to that sender's connected standby server. Only directly connected standbys are listed; no information is available about downstream standby servers.", "/versions/13/sections/1/paragraphs/0": "Read the same-version statistics collection and view documentation below for reset scope and visibility. 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\u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002</p><p><a href=\"/zh/docs/13/monitoring-stats.html\" rel=\"nofollow\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>"}, "14": {"view": "pg_stat_replication", "facts": [{"label": "\u89c6\u56fe", "value": "pg_stat_replication"}, {"label": "\u5b57\u6bb5", "value": "replay_lag"}, {"label": "SQL \u7c7b\u578b", "value": "interval"}, {"label": "\u5b57\u6bb5\u5b9a\u4e49\u8bb0\u8f7d\u7684\u5355\u4f4d", "value": "\u672a\u6307\u5b9a"}, {"label": "\u91cd\u7f6e\u6761\u4ef6", "value": "\u624b\u518c\u672a\u4e3a\u6b64\u89c6\u56fe\u8bb0\u8f7d stats_reset \u5b57\u6bb5"}], "field": "replay_lag", "tables": [], "related": [{"url": "/wiki/catalog/pg_stat_replication/?v=14", "label": "pg_stat_replication \u5b57\u6bb5"}, {"url": "/docs/14/monitoring-stats.html", "label": "\u7edf\u8ba1\u6536\u96c6\u4e0e\u91cd\u7f6e\u51fd\u6570"}], "release": {"ref": "https://ftp.postgresql.org/pub/source/v14.24/postgresql-14.24.tar.bz2", "label": 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\u53d1\u9001\u8fdb\u7a0b\u5305\u542b\u4e00\u884c\uff0c\u663e\u793a\u6709\u5173\u590d\u5236\u5230\u8be5\u53d1\u9001\u8fdb\u7a0b\u6240\u8fde\u63a5\u5907\u5e93\u7684\u7edf\u8ba1\u4fe1\u606f\u3002\u8fd9\u91cc\u53ea\u5217\u51fa\u76f4\u63a5\u8fde\u63a5\u7684\u5907\u5e93\uff1b\u4e0d\u5305\u542b\u4e0b\u6e38\u5907\u5e93\u7684\u4fe1\u606f\u3002"]}, {"title": "\u91c7\u96c6\u4e0e\u91cd\u7f6e\u8bed\u4e49", "paragraphs": ["\u91cd\u7f6e\u8303\u56f4\u548c\u53ef\u89c1\u6027\u8bf7\u53c2\u9605\u4e0b\u65b9\u540c\u7248\u672c\u7684\u7edf\u8ba1\u4fe1\u606f\u6536\u96c6\u4e0e\u89c6\u56fe\u6587\u6863\u3002\u4e0d\u6839\u636e\u5b57\u6bb5\u540d\u79f0\u63a8\u65ad\u5404\u5b57\u6bb5\u7684\u91cd\u7f6e\u89c4\u5219\u3002"]}, {"code": "SELECT replay_lag FROM pg_catalog.pg_stat_replication;", "title": "\u67e5\u770b\u6b64\u5b57\u6bb5", "paragraphs": ["\u793a\u4f8b\u67e5\u8be2\uff1b\u4e0d\u8868\u793a\u5df2\u6267\u884c\uff0c\u4e5f\u4e0d\u63d0\u4f9b\u5b9e\u6d4b\u503c\u3002"]}], "sql_type": "interval", "center_zh": {"title": 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\u53d1\u9001\u8fdb\u7a0b\u5305\u542b\u4e00\u884c\uff0c\u663e\u793a\u6709\u5173\u590d\u5236\u5230\u8be5\u53d1\u9001\u8fdb\u7a0b\u6240\u8fde\u63a5\u5907\u5e93\u7684\u7edf\u8ba1\u4fe1\u606f\u3002\u8fd9\u91cc\u53ea\u5217\u51fa\u76f4\u63a5\u8fde\u63a5\u7684\u5907\u5e93\uff1b\u4e0d\u5305\u542b\u4e0b\u6e38\u5907\u5e93\u7684\u4fe1\u606f\u3002"]}, {"title": "\u91c7\u96c6\u4e0e\u91cd\u7f6e\u8bed\u4e49", "paragraphs": ["\u91cd\u7f6e\u8303\u56f4\u548c\u53ef\u89c1\u6027\u8bf7\u53c2\u9605\u4e0b\u65b9\u540c\u7248\u672c\u7684\u7edf\u8ba1\u4fe1\u606f\u6536\u96c6\u4e0e\u89c6\u56fe\u6587\u6863\u3002\u4e0d\u6839\u636e\u5b57\u6bb5\u540d\u79f0\u63a8\u65ad\u5404\u5b57\u6bb5\u7684\u91cd\u7f6e\u89c4\u5219\u3002"]}, {"code": "SELECT replay_lag FROM pg_catalog.pg_stat_replication;", "title": "\u67e5\u770b\u6b64\u5b57\u6bb5", "paragraphs": ["\u793a\u4f8b\u67e5\u8be2\uff1b\u4e0d\u8868\u793a\u5df2\u6267\u884c\uff0c\u4e5f\u4e0d\u63d0\u4f9b\u5b9e\u6d4b\u503c\u3002"]}], "description_zh": "\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002", "description_zh_html": "<p>pg_stat_replication.replay_lag \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_replication</code></dd><dt>\u5b57\u6bb5</dt><dd><code>replay_lag</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>interval</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002</p><p><a href=\"/zh/docs/14/monitoring-stats.html#\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>"}, "summary": "\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002", "version": "14", "link_map": {"/zh/docs/14/monitoring-stats.html": "/docs/14/monitoring-stats.html"}, "body_html": "<p>pg_stat_replication.replay_lag \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_replication</code></dd><dt>\u5b57\u6bb5</dt><dd><code>replay_lag</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>interval</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002</p><p><a href=\"/zh/docs/14/monitoring-stats.html\" rel=\"nofollow\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>", "body_sha256": "abd48a7c2e39e83c2e9b621b00a2f74ebc358f30154b8d3561411c7c2e8ec67e", "content_hash": "6f8e42519dce913c27b75dbe29892b571dc011842aeb4e03d8e0bf002abc1718", "source_database": "center", "source_revision": "a7fa7ed3d558172355f51406097a7bd4f6b473be80f311ef7cda96bf383d8897"}, "signature": "SELECT replay_lag FROM pg_catalog.pg_stat_replication;", "tables_zh": [], "documented": true, "description": ["\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002"], "manual_html": "", "manual_path": "/docs/14/monitoring-stats.html", "sections_zh": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["pg_stat_replication \u89c6\u56fe\u4e3a\u6bcf\u4e2a WAL \u53d1\u9001\u8fdb\u7a0b\u5305\u542b\u4e00\u884c\uff0c\u663e\u793a\u6709\u5173\u590d\u5236\u5230\u8be5\u53d1\u9001\u8fdb\u7a0b\u6240\u8fde\u63a5\u5907\u5e93\u7684\u7edf\u8ba1\u4fe1\u606f\u3002\u8fd9\u91cc\u53ea\u5217\u51fa\u76f4\u63a5\u8fde\u63a5\u7684\u5907\u5e93\uff1b\u4e0d\u5305\u542b\u4e0b\u6e38\u5907\u5e93\u7684\u4fe1\u606f\u3002"]}, {"title": "\u91c7\u96c6\u4e0e\u91cd\u7f6e\u8bed\u4e49", "paragraphs": ["\u91cd\u7f6e\u8303\u56f4\u548c\u53ef\u89c1\u6027\u8bf7\u53c2\u9605\u4e0b\u65b9\u540c\u7248\u672c\u7684\u7edf\u8ba1\u4fe1\u606f\u6536\u96c6\u4e0e\u89c6\u56fe\u6587\u6863\u3002\u4e0d\u6839\u636e\u5b57\u6bb5\u540d\u79f0\u63a8\u65ad\u5404\u5b57\u6bb5\u7684\u91cd\u7f6e\u89c4\u5219\u3002"]}, {"code": "SELECT replay_lag FROM pg_catalog.pg_stat_replication;", "title": "\u67e5\u770b\u6b64\u5b57\u6bb5", "paragraphs": ["\u793a\u4f8b\u67e5\u8be2\uff1b\u4e0d\u8868\u793a\u5df2\u6267\u884c\uff0c\u4e5f\u4e0d\u63d0\u4f9b\u5b9e\u6d4b\u503c\u3002"]}], "source_only": false, "localization": {"status": "complete", "sources": [{"url": "/docs/14/monitoring-stats.html", "method": "same-major semantic node", "sha256": "a622383556aa74bc5f0e402d9cb6c1e6ce1d111286c0f4e45f55b81e34d57922", "language": "zh", "matched_nodes": ["#MONITORING-STATS/div[8]/div[3]/div[1]/table[0]/tbody[2]/tr[16]/td[0]/p[1]", "#MONITORING-STATS/div[8]/p[2]"]}], "language": "zh", "original_text": {"/versions/14/description/0": "Time elapsed between flushing recent WAL locally and receiving notification that this standby server has written, flushed and applied it. This can be used to gauge the delay that synchronous_commit level remote_apply incurred while committing if this server was configured as a synchronous standby.", "/versions/14/facts/0/label": "View", "/versions/14/facts/1/label": "Field", "/versions/14/facts/2/label": "SQL type", "/versions/14/facts/3/label": "Units named in the field definition", "/versions/14/facts/3/value": "Not specified", "/versions/14/facts/4/label": "Reset observation", "/versions/14/facts/4/value": "No stats_reset field is documented for this view", "/versions/14/related/0/label": "pg_stat_replication columns", "/versions/14/related/1/label": "Statistics collection and reset functions", "/versions/14/sections/0/title": "View semantics", "/versions/14/sections/1/title": "Collection and reset context", "/versions/14/sections/2/title": "Inspect this field", "/versions/14/sections/0/paragraphs/0": "The pg_stat_replication view will contain one row per WAL sender process, showing statistics about replication to that sender's connected standby server. Only directly connected standbys are listed; no information is available about downstream standby servers.", "/versions/14/sections/1/paragraphs/0": "Read the same-version statistics collection and view documentation below for reset scope and visibility. No per-field reset rule is inferred from the field name.", "/versions/14/sections/2/paragraphs/0": "Example query; no execution result or measured value is asserted."}, "fallback_fields": [], "source_language": "en", "original_snapshot_sha256": "63d3a3c97dd61adb75e294f7b9d884405530ea2746102095af80de4c27ab0b5c", "canonical_center_text_hash": "6f8e42519dce913c27b75dbe29892b571dc011842aeb4e03d8e0bf002abc1718"}, "description_zh": "\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002", "comparison_data": {"view": "pg_stat_replication", "field": "replay_lag", "sql_type": "interval", "units_mentioned": []}, "comparison_hash": "97052561d644196937057eebf96b5d5b3a43e3afacf041e0c1f4ceed6f66ea5e", "manual_language": "zh", "units_mentioned": [], "description_zh_html": "<p>pg_stat_replication.replay_lag \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_replication</code></dd><dt>\u5b57\u6bb5</dt><dd><code>replay_lag</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>interval</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002</p><p><a href=\"/zh/docs/14/monitoring-stats.html\" rel=\"nofollow\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>"}, "15": {"view": "pg_stat_replication", "facts": [{"label": "\u89c6\u56fe", "value": "pg_stat_replication"}, {"label": "\u5b57\u6bb5", "value": "replay_lag"}, {"label": "SQL \u7c7b\u578b", "value": "interval"}, {"label": "\u5b57\u6bb5\u5b9a\u4e49\u8bb0\u8f7d\u7684\u5355\u4f4d", "value": "\u672a\u6307\u5b9a"}, {"label": "\u91cd\u7f6e\u6761\u4ef6", "value": "\u624b\u518c\u672a\u4e3a\u6b64\u89c6\u56fe\u8bb0\u8f7d stats_reset \u5b57\u6bb5"}], "field": "replay_lag", "tables": [], "related": [{"url": "/wiki/catalog/pg_stat_replication/?v=15", "label": "pg_stat_replication \u5b57\u6bb5"}, {"url": "/docs/15/monitoring-stats.html", "label": "\u7edf\u8ba1\u6536\u96c6\u4e0e\u91cd\u7f6e\u51fd\u6570"}], "release": {"ref": "https://ftp.postgresql.org/pub/source/v15.19/postgresql-15.19.tar.bz2", "label": 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\u53d1\u9001\u8fdb\u7a0b\u5305\u542b\u4e00\u884c\uff0c\u663e\u793a\u6709\u5173\u590d\u5236\u5230\u8be5\u53d1\u9001\u8fdb\u7a0b\u6240\u8fde\u63a5\u5907\u5e93\u7684\u7edf\u8ba1\u4fe1\u606f\u3002\u8fd9\u91cc\u53ea\u5217\u51fa\u76f4\u63a5\u8fde\u63a5\u7684\u5907\u5e93\uff1b\u4e0d\u5305\u542b\u4e0b\u6e38\u5907\u5e93\u7684\u4fe1\u606f\u3002"]}, {"title": "\u91c7\u96c6\u4e0e\u91cd\u7f6e\u8bed\u4e49", "paragraphs": ["\u91cd\u7f6e\u8303\u56f4\u548c\u53ef\u89c1\u6027\u8bf7\u53c2\u9605\u4e0b\u65b9\u540c\u7248\u672c\u7684\u7edf\u8ba1\u4fe1\u606f\u6536\u96c6\u4e0e\u89c6\u56fe\u6587\u6863\u3002\u4e0d\u6839\u636e\u5b57\u6bb5\u540d\u79f0\u63a8\u65ad\u5404\u5b57\u6bb5\u7684\u91cd\u7f6e\u89c4\u5219\u3002"]}, {"code": "SELECT replay_lag FROM pg_catalog.pg_stat_replication;", "title": "\u67e5\u770b\u6b64\u5b57\u6bb5", "paragraphs": ["\u793a\u4f8b\u67e5\u8be2\uff1b\u4e0d\u8868\u793a\u5df2\u6267\u884c\uff0c\u4e5f\u4e0d\u63d0\u4f9b\u5b9e\u6d4b\u503c\u3002"]}], "sql_type": "interval", "center_zh": {"title": "pg_stat_replication.replay_lag", "locale": "zh-Hans", "source": {"key": "pg_stat_replication-replay_lag", "locale": "zh-Hans", "version": "15", "text_hash": "09e0672e658fc20cf41e27f848a16e2a4c057b9148c1dbbf0d01fb0173525cda", "collection": "metric", "dataset_hash": "7c31b524dfe136022d39a6ae8dcfac6b3bbd5f8fdaf422536599981252aff0c9", "source_database": "center", "source_revision": "e1a64a87a46b825b88c082e4518161a47aab53c45694964f8ba1df28f7859f89"}, "payload": {"facts": [{"label": "\u89c6\u56fe", "value": "pg_stat_replication"}, {"label": "\u5b57\u6bb5", "value": "replay_lag"}, {"label": "SQL \u7c7b\u578b", "value": "interval"}, {"label": "\u5b57\u6bb5\u5b9a\u4e49\u8bb0\u8f7d\u7684\u5355\u4f4d", "value": "\u672a\u6307\u5b9a"}, {"label": "\u91cd\u7f6e\u6761\u4ef6", "value": "\u624b\u518c\u672a\u4e3a\u6b64\u89c6\u56fe\u8bb0\u8f7d stats_reset \u5b57\u6bb5"}], "tables": [], "zh_from": {"kind": "same-version-chinese-manual-with-source-derived-structured-summary", "manual": {"url": "/zh/docs/15/monitoring-stats.html#", "anchor": "", "column": "replay_lag", "locale": "zh-Hans", "version": "15", "build_id": 101, "page_key": "monitoring-stats.html", "extraction": "exact-catalog-field", "source_hash": "a1f491ce4744d3b72b0eced7fad7c91762a4a8ba5ce0d61094b0616668450592", "source_revision": "unknown:rendered-translation-baseline", "translation_revision": "git:b1b500221dbe5437cfca004d6b04d3f6e422765d;html-sha256:6bce1a2df9170cb1146a1411c5547190856638221a6539e618ee1016c9f493ad"}, "body_sha256": "ee7045328d7abc48fb1e02db06182df1c5ba8176eb64226e9d2894a3061276ce", "runtime_rerun": false, "authored_translation": "source-derived-structured-summary", "source_facts_revision": "e1a64a87a46b825b88c082e4518161a47aab53c45694964f8ba1df28f7859f89"}, "sections": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["pg_stat_replication \u89c6\u56fe\u4e3a\u6bcf\u4e2a WAL \u53d1\u9001\u8fdb\u7a0b\u5305\u542b\u4e00\u884c\uff0c\u663e\u793a\u6709\u5173\u590d\u5236\u5230\u8be5\u53d1\u9001\u8fdb\u7a0b\u6240\u8fde\u63a5\u5907\u5e93\u7684\u7edf\u8ba1\u4fe1\u606f\u3002\u8fd9\u91cc\u53ea\u5217\u51fa\u76f4\u63a5\u8fde\u63a5\u7684\u5907\u5e93\uff1b\u4e0d\u5305\u542b\u4e0b\u6e38\u5907\u5e93\u7684\u4fe1\u606f\u3002"]}, {"title": "\u91c7\u96c6\u4e0e\u91cd\u7f6e\u8bed\u4e49", "paragraphs": ["\u91cd\u7f6e\u8303\u56f4\u548c\u53ef\u89c1\u6027\u8bf7\u53c2\u9605\u4e0b\u65b9\u540c\u7248\u672c\u7684\u7edf\u8ba1\u4fe1\u606f\u6536\u96c6\u4e0e\u89c6\u56fe\u6587\u6863\u3002\u4e0d\u6839\u636e\u5b57\u6bb5\u540d\u79f0\u63a8\u65ad\u5404\u5b57\u6bb5\u7684\u91cd\u7f6e\u89c4\u5219\u3002"]}, {"code": "SELECT replay_lag FROM pg_catalog.pg_stat_replication;", "title": "\u67e5\u770b\u6b64\u5b57\u6bb5", "paragraphs": ["\u793a\u4f8b\u67e5\u8be2\uff1b\u4e0d\u8868\u793a\u5df2\u6267\u884c\uff0c\u4e5f\u4e0d\u63d0\u4f9b\u5b9e\u6d4b\u503c\u3002"]}], "description_zh": "\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002", "description_zh_html": "<p>pg_stat_replication.replay_lag \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_replication</code></dd><dt>\u5b57\u6bb5</dt><dd><code>replay_lag</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>interval</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002</p><p><a href=\"/zh/docs/15/monitoring-stats.html#\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>"}, "summary": "\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002", "version": "15", "link_map": {"/zh/docs/15/monitoring-stats.html": "/docs/15/monitoring-stats.html"}, "body_html": "<p>pg_stat_replication.replay_lag \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_replication</code></dd><dt>\u5b57\u6bb5</dt><dd><code>replay_lag</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>interval</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002</p><p><a href=\"/zh/docs/15/monitoring-stats.html\" rel=\"nofollow\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>", "body_sha256": "369f3b202151a163948989732a2abb2074ab81c8f0b99fdb7a85475a0c71a6b1", "content_hash": "09e0672e658fc20cf41e27f848a16e2a4c057b9148c1dbbf0d01fb0173525cda", "source_database": "center", "source_revision": "e1a64a87a46b825b88c082e4518161a47aab53c45694964f8ba1df28f7859f89"}, "signature": "SELECT replay_lag FROM pg_catalog.pg_stat_replication;", "tables_zh": [], "documented": true, "description": ["\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002"], "manual_html": "", "manual_path": "/docs/15/monitoring-stats.html", "sections_zh": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["pg_stat_replication \u89c6\u56fe\u4e3a\u6bcf\u4e2a WAL \u53d1\u9001\u8fdb\u7a0b\u5305\u542b\u4e00\u884c\uff0c\u663e\u793a\u6709\u5173\u590d\u5236\u5230\u8be5\u53d1\u9001\u8fdb\u7a0b\u6240\u8fde\u63a5\u5907\u5e93\u7684\u7edf\u8ba1\u4fe1\u606f\u3002\u8fd9\u91cc\u53ea\u5217\u51fa\u76f4\u63a5\u8fde\u63a5\u7684\u5907\u5e93\uff1b\u4e0d\u5305\u542b\u4e0b\u6e38\u5907\u5e93\u7684\u4fe1\u606f\u3002"]}, {"title": "\u91c7\u96c6\u4e0e\u91cd\u7f6e\u8bed\u4e49", "paragraphs": ["\u91cd\u7f6e\u8303\u56f4\u548c\u53ef\u89c1\u6027\u8bf7\u53c2\u9605\u4e0b\u65b9\u540c\u7248\u672c\u7684\u7edf\u8ba1\u4fe1\u606f\u6536\u96c6\u4e0e\u89c6\u56fe\u6587\u6863\u3002\u4e0d\u6839\u636e\u5b57\u6bb5\u540d\u79f0\u63a8\u65ad\u5404\u5b57\u6bb5\u7684\u91cd\u7f6e\u89c4\u5219\u3002"]}, {"code": "SELECT replay_lag FROM pg_catalog.pg_stat_replication;", "title": "\u67e5\u770b\u6b64\u5b57\u6bb5", "paragraphs": ["\u793a\u4f8b\u67e5\u8be2\uff1b\u4e0d\u8868\u793a\u5df2\u6267\u884c\uff0c\u4e5f\u4e0d\u63d0\u4f9b\u5b9e\u6d4b\u503c\u3002"]}], "source_only": false, "localization": {"status": "complete", "sources": [{"url": "/docs/15/monitoring-stats.html", "method": "same-major semantic node", "sha256": "373028581d43d13a3f098f997d5912fca6c8c1bf42a129d9336834c119bcaf6b", "language": "zh", "matched_nodes": ["#MONITORING-STATS/div[8]/div[3]/div[1]/table[0]/tbody[2]/tr[16]/td[0]/p[1]", "#MONITORING-STATS/div[8]/p[2]"]}], "language": "zh", "original_text": {"/versions/15/description/0": "Time elapsed between flushing recent WAL locally and receiving notification that this standby server has written, flushed and applied it. This can be used to gauge the delay that synchronous_commit level remote_apply incurred while committing if this server was configured as a synchronous standby.", "/versions/15/facts/0/label": "View", "/versions/15/facts/1/label": "Field", "/versions/15/facts/2/label": "SQL type", "/versions/15/facts/3/label": "Units named in the field definition", "/versions/15/facts/3/value": "Not specified", "/versions/15/facts/4/label": "Reset observation", "/versions/15/facts/4/value": "No stats_reset field is documented for this view", "/versions/15/related/0/label": "pg_stat_replication columns", "/versions/15/related/1/label": "Statistics collection and reset functions", "/versions/15/sections/0/title": "View semantics", "/versions/15/sections/1/title": "Collection and reset context", "/versions/15/sections/2/title": "Inspect this field", "/versions/15/sections/0/paragraphs/0": "The pg_stat_replication view will contain one row per WAL sender process, showing statistics about replication to that sender's connected standby server. Only directly connected standbys are listed; no information is available about downstream standby servers.", "/versions/15/sections/1/paragraphs/0": "Read the same-version statistics collection and view documentation below for reset scope and visibility. No per-field reset rule is inferred from the field name.", "/versions/15/sections/2/paragraphs/0": "Example query; no execution result or measured value is asserted."}, "fallback_fields": [], "source_language": "en", "original_snapshot_sha256": "578f63372a3b9f922577657f2ea19dbb4cadb3aef196b7f8f340cb970af5669d", "canonical_center_text_hash": "09e0672e658fc20cf41e27f848a16e2a4c057b9148c1dbbf0d01fb0173525cda"}, "description_zh": "\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002", "comparison_data": {"view": "pg_stat_replication", "field": "replay_lag", "sql_type": "interval", "units_mentioned": []}, "comparison_hash": "97052561d644196937057eebf96b5d5b3a43e3afacf041e0c1f4ceed6f66ea5e", "manual_language": "zh", "units_mentioned": [], "description_zh_html": "<p>pg_stat_replication.replay_lag \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_replication</code></dd><dt>\u5b57\u6bb5</dt><dd><code>replay_lag</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>interval</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002</p><p><a href=\"/zh/docs/15/monitoring-stats.html\" rel=\"nofollow\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>"}, "16": {"view": "pg_stat_replication", "facts": [{"label": "\u89c6\u56fe", "value": "pg_stat_replication"}, {"label": "\u5b57\u6bb5", "value": "replay_lag"}, {"label": "SQL \u7c7b\u578b", "value": "interval"}, {"label": "\u5b57\u6bb5\u5b9a\u4e49\u8bb0\u8f7d\u7684\u5355\u4f4d", "value": "\u672a\u6307\u5b9a"}, {"label": "\u91cd\u7f6e\u6761\u4ef6", "value": "\u624b\u518c\u672a\u4e3a\u6b64\u89c6\u56fe\u8bb0\u8f7d stats_reset \u5b57\u6bb5"}], "field": "replay_lag", "tables": [], "related": [{"url": "/wiki/catalog/pg_stat_replication/?v=16", "label": "pg_stat_replication \u5b57\u6bb5"}, {"url": "/docs/16/monitoring-stats.html", "label": "\u7edf\u8ba1\u6536\u96c6\u4e0e\u91cd\u7f6e\u51fd\u6570"}], "release": {"ref": "https://ftp.postgresql.org/pub/source/v16.15/postgresql-16.15.tar.bz2", "label": "16.15", "major": "16", "channel": "stable", "revision": "c1575341fa7bd40f5274ea465b34390f4dc64cdd0770af327005caaeb9f6b7ed"}, "sources": [{"url": "/docs/16/monitoring-stats.html#PG-STAT-REPLICATION-VIEW", "path": "monitoring-stats.html", "label": "PostgreSQL 16 English manual", "sha256": "a4c274defe8a41ff2895040cd542b5499063b844669ff3336de1a1317c3fe086"}], "zh_from": {"kind": "same-version-chinese-manual-with-source-derived-structured-summary", "manual": {"url": "/zh/docs/16/monitoring-stats.html#", "anchor": "", "column": "replay_lag", "locale": "zh-Hans", "version": "16", "build_id": 103, "page_key": "monitoring-stats.html", "extraction": "exact-catalog-field", "source_hash": "bc7073c776c27e13a8c84203c68f4913e8ee7601c38364f2b4e397c4851c8e08", "source_revision": "unknown:rendered-translation-baseline", "translation_revision": "git:b1b500221dbe5437cfca004d6b04d3f6e422765d;html-sha256:80579a071736780f9c4022bb5148e1fb1256f1a33591306af67816e9e9bf3a9b"}, "body_sha256": "bcf5fa7fb03df4e7db8b41b068ec15a087c2a795ecc89262f145ccc91a32ca30", "runtime_rerun": false, "authored_translation": "source-derived-structured-summary", "source_facts_revision": "c1575341fa7bd40f5274ea465b34390f4dc64cdd0770af327005caaeb9f6b7ed"}, "facts_zh": [{"label": "\u89c6\u56fe", "value": "pg_stat_replication"}, {"label": "\u5b57\u6bb5", "value": "replay_lag"}, {"label": "SQL \u7c7b\u578b", "value": "interval"}, {"label": "\u5b57\u6bb5\u5b9a\u4e49\u8bb0\u8f7d\u7684\u5355\u4f4d", "value": "\u672a\u6307\u5b9a"}, {"label": "\u91cd\u7f6e\u6761\u4ef6", "value": "\u624b\u518c\u672a\u4e3a\u6b64\u89c6\u56fe\u8bb0\u8f7d stats_reset \u5b57\u6bb5"}], "sections": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["pg_stat_replication \u89c6\u56fe\u4e3a\u6bcf\u4e2a WAL \u53d1\u9001\u8fdb\u7a0b\u5305\u542b\u4e00\u884c\uff0c\u663e\u793a\u6709\u5173\u590d\u5236\u5230\u8be5\u53d1\u9001\u8fdb\u7a0b\u6240\u8fde\u63a5\u5907\u5e93\u7684\u7edf\u8ba1\u4fe1\u606f\u3002\u8fd9\u91cc\u53ea\u5217\u51fa\u76f4\u63a5\u8fde\u63a5\u7684\u5907\u5e93\uff1b\u4e0d\u5305\u542b\u4e0b\u6e38\u5907\u5e93\u7684\u4fe1\u606f\u3002"]}, {"title": "\u91c7\u96c6\u4e0e\u91cd\u7f6e\u8bed\u4e49", "paragraphs": ["\u91cd\u7f6e\u8303\u56f4\u548c\u53ef\u89c1\u6027\u8bf7\u53c2\u9605\u4e0b\u65b9\u540c\u7248\u672c\u7684\u7edf\u8ba1\u4fe1\u606f\u6536\u96c6\u4e0e\u89c6\u56fe\u6587\u6863\u3002\u4e0d\u6839\u636e\u5b57\u6bb5\u540d\u79f0\u63a8\u65ad\u5404\u5b57\u6bb5\u7684\u91cd\u7f6e\u89c4\u5219\u3002"]}, {"code": "SELECT replay_lag FROM pg_catalog.pg_stat_replication;", "title": "\u67e5\u770b\u6b64\u5b57\u6bb5", "paragraphs": ["\u793a\u4f8b\u67e5\u8be2\uff1b\u4e0d\u8868\u793a\u5df2\u6267\u884c\uff0c\u4e5f\u4e0d\u63d0\u4f9b\u5b9e\u6d4b\u503c\u3002"]}], "sql_type": "interval", "center_zh": {"title": "pg_stat_replication.replay_lag", "locale": "zh-Hans", "source": {"key": "pg_stat_replication-replay_lag", "locale": "zh-Hans", "version": "16", "text_hash": "321a24e64d310228742118095a8db6104e2e59e50a359ca372ffb76766cdca99", "collection": "metric", "dataset_hash": "7c31b524dfe136022d39a6ae8dcfac6b3bbd5f8fdaf422536599981252aff0c9", "source_database": "center", "source_revision": "c1575341fa7bd40f5274ea465b34390f4dc64cdd0770af327005caaeb9f6b7ed"}, "payload": {"facts": [{"label": "\u89c6\u56fe", "value": "pg_stat_replication"}, {"label": "\u5b57\u6bb5", "value": "replay_lag"}, {"label": "SQL \u7c7b\u578b", "value": "interval"}, {"label": "\u5b57\u6bb5\u5b9a\u4e49\u8bb0\u8f7d\u7684\u5355\u4f4d", "value": "\u672a\u6307\u5b9a"}, {"label": "\u91cd\u7f6e\u6761\u4ef6", "value": "\u624b\u518c\u672a\u4e3a\u6b64\u89c6\u56fe\u8bb0\u8f7d stats_reset \u5b57\u6bb5"}], "tables": [], "zh_from": {"kind": "same-version-chinese-manual-with-source-derived-structured-summary", "manual": {"url": "/zh/docs/16/monitoring-stats.html#", "anchor": "", "column": "replay_lag", "locale": "zh-Hans", "version": "16", "build_id": 103, "page_key": "monitoring-stats.html", "extraction": "exact-catalog-field", "source_hash": "bc7073c776c27e13a8c84203c68f4913e8ee7601c38364f2b4e397c4851c8e08", "source_revision": "unknown:rendered-translation-baseline", "translation_revision": "git:b1b500221dbe5437cfca004d6b04d3f6e422765d;html-sha256:80579a071736780f9c4022bb5148e1fb1256f1a33591306af67816e9e9bf3a9b"}, "body_sha256": "bcf5fa7fb03df4e7db8b41b068ec15a087c2a795ecc89262f145ccc91a32ca30", "runtime_rerun": false, "authored_translation": "source-derived-structured-summary", "source_facts_revision": "c1575341fa7bd40f5274ea465b34390f4dc64cdd0770af327005caaeb9f6b7ed"}, "sections": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["pg_stat_replication \u89c6\u56fe\u4e3a\u6bcf\u4e2a WAL \u53d1\u9001\u8fdb\u7a0b\u5305\u542b\u4e00\u884c\uff0c\u663e\u793a\u6709\u5173\u590d\u5236\u5230\u8be5\u53d1\u9001\u8fdb\u7a0b\u6240\u8fde\u63a5\u5907\u5e93\u7684\u7edf\u8ba1\u4fe1\u606f\u3002\u8fd9\u91cc\u53ea\u5217\u51fa\u76f4\u63a5\u8fde\u63a5\u7684\u5907\u5e93\uff1b\u4e0d\u5305\u542b\u4e0b\u6e38\u5907\u5e93\u7684\u4fe1\u606f\u3002"]}, {"title": "\u91c7\u96c6\u4e0e\u91cd\u7f6e\u8bed\u4e49", "paragraphs": ["\u91cd\u7f6e\u8303\u56f4\u548c\u53ef\u89c1\u6027\u8bf7\u53c2\u9605\u4e0b\u65b9\u540c\u7248\u672c\u7684\u7edf\u8ba1\u4fe1\u606f\u6536\u96c6\u4e0e\u89c6\u56fe\u6587\u6863\u3002\u4e0d\u6839\u636e\u5b57\u6bb5\u540d\u79f0\u63a8\u65ad\u5404\u5b57\u6bb5\u7684\u91cd\u7f6e\u89c4\u5219\u3002"]}, {"code": "SELECT replay_lag FROM pg_catalog.pg_stat_replication;", "title": "\u67e5\u770b\u6b64\u5b57\u6bb5", "paragraphs": ["\u793a\u4f8b\u67e5\u8be2\uff1b\u4e0d\u8868\u793a\u5df2\u6267\u884c\uff0c\u4e5f\u4e0d\u63d0\u4f9b\u5b9e\u6d4b\u503c\u3002"]}], "description_zh": "\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002", "description_zh_html": "<p>pg_stat_replication.replay_lag \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_replication</code></dd><dt>\u5b57\u6bb5</dt><dd><code>replay_lag</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>interval</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002</p><p><a href=\"/zh/docs/16/monitoring-stats.html#\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>"}, "summary": "\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002", "version": "16", "link_map": {"/zh/docs/16/monitoring-stats.html": "/docs/16/monitoring-stats.html"}, "body_html": "<p>pg_stat_replication.replay_lag \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_replication</code></dd><dt>\u5b57\u6bb5</dt><dd><code>replay_lag</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>interval</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002</p><p><a href=\"/zh/docs/16/monitoring-stats.html\" rel=\"nofollow\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>", "body_sha256": "1b7ead8568435a40f0a79e8d876e313136cc10dd800605fc1a9036fc4f897db5", "content_hash": "321a24e64d310228742118095a8db6104e2e59e50a359ca372ffb76766cdca99", "source_database": "center", "source_revision": "c1575341fa7bd40f5274ea465b34390f4dc64cdd0770af327005caaeb9f6b7ed"}, "signature": "SELECT replay_lag FROM pg_catalog.pg_stat_replication;", "tables_zh": [], "documented": true, "description": ["\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002"], "manual_html": "", "manual_path": "/docs/16/monitoring-stats.html", "sections_zh": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["pg_stat_replication \u89c6\u56fe\u4e3a\u6bcf\u4e2a WAL \u53d1\u9001\u8fdb\u7a0b\u5305\u542b\u4e00\u884c\uff0c\u663e\u793a\u6709\u5173\u590d\u5236\u5230\u8be5\u53d1\u9001\u8fdb\u7a0b\u6240\u8fde\u63a5\u5907\u5e93\u7684\u7edf\u8ba1\u4fe1\u606f\u3002\u8fd9\u91cc\u53ea\u5217\u51fa\u76f4\u63a5\u8fde\u63a5\u7684\u5907\u5e93\uff1b\u4e0d\u5305\u542b\u4e0b\u6e38\u5907\u5e93\u7684\u4fe1\u606f\u3002"]}, {"title": "\u91c7\u96c6\u4e0e\u91cd\u7f6e\u8bed\u4e49", "paragraphs": ["\u91cd\u7f6e\u8303\u56f4\u548c\u53ef\u89c1\u6027\u8bf7\u53c2\u9605\u4e0b\u65b9\u540c\u7248\u672c\u7684\u7edf\u8ba1\u4fe1\u606f\u6536\u96c6\u4e0e\u89c6\u56fe\u6587\u6863\u3002\u4e0d\u6839\u636e\u5b57\u6bb5\u540d\u79f0\u63a8\u65ad\u5404\u5b57\u6bb5\u7684\u91cd\u7f6e\u89c4\u5219\u3002"]}, {"code": "SELECT replay_lag FROM pg_catalog.pg_stat_replication;", "title": "\u67e5\u770b\u6b64\u5b57\u6bb5", "paragraphs": ["\u793a\u4f8b\u67e5\u8be2\uff1b\u4e0d\u8868\u793a\u5df2\u6267\u884c\uff0c\u4e5f\u4e0d\u63d0\u4f9b\u5b9e\u6d4b\u503c\u3002"]}], "source_only": false, "localization": {"status": "complete", "sources": [{"url": "/docs/16/monitoring-stats.html", "method": "same-major semantic node", "sha256": "602e708943074767e7aad252e93938422e388dae22bd99fc583e93f7689395ba", "language": "zh", "matched_nodes": ["#MONITORING-STATS/div[8]/div[3]/div[1]/table[0]/tbody[2]/tr[16]/td[0]/p[1]", "#MONITORING-STATS/div[8]/p[2]"]}], "language": "zh", "original_text": {"/versions/16/description/0": "Time elapsed between flushing recent WAL locally and receiving notification that this standby server has written, flushed and applied it. This can be used to gauge the delay that synchronous_commit level remote_apply incurred while committing if this server was configured as a synchronous standby.", "/versions/16/facts/0/label": "View", "/versions/16/facts/1/label": "Field", "/versions/16/facts/2/label": "SQL type", "/versions/16/facts/3/label": "Units named in the field definition", "/versions/16/facts/3/value": "Not specified", "/versions/16/facts/4/label": "Reset observation", "/versions/16/facts/4/value": "No stats_reset field is documented for this view", "/versions/16/related/0/label": "pg_stat_replication columns", "/versions/16/related/1/label": "Statistics collection and reset functions", "/versions/16/sections/0/title": "View semantics", "/versions/16/sections/1/title": "Collection and reset context", "/versions/16/sections/2/title": "Inspect this field", "/versions/16/sections/0/paragraphs/0": "The pg_stat_replication view will contain one row per WAL sender process, showing statistics about replication to that sender's connected standby server. Only directly connected standbys are listed; no information is available about downstream standby servers.", "/versions/16/sections/1/paragraphs/0": "Read the same-version statistics collection and view documentation below for reset scope and visibility. No per-field reset rule is inferred from the field name.", "/versions/16/sections/2/paragraphs/0": "Example query; no execution result or measured value is asserted."}, "fallback_fields": [], "source_language": "en", "original_snapshot_sha256": "c67825b7ae9404f51416611d944e73154b6c67be4ba24ff6e6ef36d20d1f24a1", "canonical_center_text_hash": "321a24e64d310228742118095a8db6104e2e59e50a359ca372ffb76766cdca99"}, "description_zh": "\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002", "comparison_data": {"view": "pg_stat_replication", "field": "replay_lag", "sql_type": "interval", "units_mentioned": []}, "comparison_hash": "97052561d644196937057eebf96b5d5b3a43e3afacf041e0c1f4ceed6f66ea5e", "manual_language": "zh", "units_mentioned": [], "description_zh_html": "<p>pg_stat_replication.replay_lag \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_replication</code></dd><dt>\u5b57\u6bb5</dt><dd><code>replay_lag</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>interval</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002</p><p><a href=\"/zh/docs/16/monitoring-stats.html\" rel=\"nofollow\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>"}, "17": {"view": "pg_stat_replication", "facts": [{"label": "\u89c6\u56fe", "value": "pg_stat_replication"}, {"label": "\u5b57\u6bb5", "value": "replay_lag"}, {"label": "SQL \u7c7b\u578b", "value": "interval"}, {"label": "\u5b57\u6bb5\u5b9a\u4e49\u8bb0\u8f7d\u7684\u5355\u4f4d", "value": "\u672a\u6307\u5b9a"}, {"label": "\u91cd\u7f6e\u6761\u4ef6", "value": "\u624b\u518c\u672a\u4e3a\u6b64\u89c6\u56fe\u8bb0\u8f7d stats_reset \u5b57\u6bb5"}], "field": "replay_lag", "tables": [], "related": [{"url": "/wiki/catalog/pg_stat_replication/?v=17", "label": "pg_stat_replication \u5b57\u6bb5"}, {"url": "/docs/17/monitoring-stats.html", "label": "\u7edf\u8ba1\u6536\u96c6\u4e0e\u91cd\u7f6e\u51fd\u6570"}], "release": {"ref": "https://ftp.postgresql.org/pub/source/v17.11/postgresql-17.11.tar.bz2", "label": "17.11", "major": "17", "channel": "stable", "revision": "dd27f2b3c59e73ed14aa3324901242bf69a032a6347805f274e6260322d42979"}, "sources": [{"url": "/docs/17/monitoring-stats.html#PG-STAT-REPLICATION-VIEW", "path": "monitoring-stats.html", "label": "PostgreSQL 17 English manual", "sha256": "007af6e8ab39b925963273ec3ba7f06f8ee6fbfaad821f07a1dc78383dbb9b99"}], "zh_from": {"kind": "same-version-chinese-manual-with-source-derived-structured-summary", "manual": {"url": "/zh/docs/17/monitoring-stats.html#", "anchor": "", "column": "replay_lag", "locale": "zh-Hans", "version": "17", "build_id": 105, "page_key": "monitoring-stats.html", "extraction": "exact-catalog-field", "source_hash": "ad63a74417862b28cba663bd779186633505e5da37845bce5f2e4bf62ee55c2b", "source_revision": "unknown:rendered-translation-baseline", "translation_revision": "git:b1b500221dbe5437cfca004d6b04d3f6e422765d;html-sha256:7340767258d21c21b36f373f1fff6bab2be18e0daca13a865129db6105c09efd"}, "body_sha256": "bdefe3a990ea7fd9118dbd0e88a45e60163f75fe4b46be0a900909168ad168b3", "runtime_rerun": false, "authored_translation": "source-derived-structured-summary", "source_facts_revision": "dd27f2b3c59e73ed14aa3324901242bf69a032a6347805f274e6260322d42979"}, "facts_zh": [{"label": "\u89c6\u56fe", "value": "pg_stat_replication"}, {"label": "\u5b57\u6bb5", "value": "replay_lag"}, {"label": "SQL \u7c7b\u578b", "value": "interval"}, {"label": "\u5b57\u6bb5\u5b9a\u4e49\u8bb0\u8f7d\u7684\u5355\u4f4d", "value": "\u672a\u6307\u5b9a"}, {"label": "\u91cd\u7f6e\u6761\u4ef6", "value": "\u624b\u518c\u672a\u4e3a\u6b64\u89c6\u56fe\u8bb0\u8f7d stats_reset \u5b57\u6bb5"}], "sections": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["pg_stat_replication \u89c6\u56fe\u4e3a\u6bcf\u4e2a WAL \u53d1\u9001\u8fdb\u7a0b\u5305\u542b\u4e00\u884c\uff0c\u663e\u793a\u6709\u5173\u590d\u5236\u5230\u8be5\u53d1\u9001\u8fdb\u7a0b\u6240\u8fde\u63a5\u5907\u5e93\u7684\u7edf\u8ba1\u4fe1\u606f\u3002\u8fd9\u91cc\u53ea\u5217\u51fa\u76f4\u63a5\u8fde\u63a5\u7684\u5907\u5e93\uff1b\u4e0d\u5305\u542b\u4e0b\u6e38\u5907\u5e93\u7684\u4fe1\u606f\u3002"]}, {"title": "\u91c7\u96c6\u4e0e\u91cd\u7f6e\u8bed\u4e49", "paragraphs": ["\u91cd\u7f6e\u8303\u56f4\u548c\u53ef\u89c1\u6027\u8bf7\u53c2\u9605\u4e0b\u65b9\u540c\u7248\u672c\u7684\u7edf\u8ba1\u4fe1\u606f\u6536\u96c6\u4e0e\u89c6\u56fe\u6587\u6863\u3002\u4e0d\u6839\u636e\u5b57\u6bb5\u540d\u79f0\u63a8\u65ad\u5404\u5b57\u6bb5\u7684\u91cd\u7f6e\u89c4\u5219\u3002"]}, {"code": "SELECT replay_lag FROM pg_catalog.pg_stat_replication;", "title": "\u67e5\u770b\u6b64\u5b57\u6bb5", "paragraphs": ["\u793a\u4f8b\u67e5\u8be2\uff1b\u4e0d\u8868\u793a\u5df2\u6267\u884c\uff0c\u4e5f\u4e0d\u63d0\u4f9b\u5b9e\u6d4b\u503c\u3002"]}], "sql_type": "interval", "center_zh": {"title": "pg_stat_replication.replay_lag", "locale": "zh-Hans", "source": {"key": "pg_stat_replication-replay_lag", "locale": "zh-Hans", "version": "17", "text_hash": "784274b8c67fb08df93073aaad3bbf3dfb60f421beb216f329f8aaa0fc767de1", "collection": "metric", "dataset_hash": "7c31b524dfe136022d39a6ae8dcfac6b3bbd5f8fdaf422536599981252aff0c9", "source_database": "center", "source_revision": "dd27f2b3c59e73ed14aa3324901242bf69a032a6347805f274e6260322d42979"}, "payload": {"facts": [{"label": "\u89c6\u56fe", "value": "pg_stat_replication"}, {"label": "\u5b57\u6bb5", "value": "replay_lag"}, {"label": "SQL \u7c7b\u578b", "value": "interval"}, {"label": "\u5b57\u6bb5\u5b9a\u4e49\u8bb0\u8f7d\u7684\u5355\u4f4d", "value": "\u672a\u6307\u5b9a"}, {"label": "\u91cd\u7f6e\u6761\u4ef6", "value": "\u624b\u518c\u672a\u4e3a\u6b64\u89c6\u56fe\u8bb0\u8f7d stats_reset \u5b57\u6bb5"}], "tables": [], "zh_from": {"kind": "same-version-chinese-manual-with-source-derived-structured-summary", "manual": {"url": "/zh/docs/17/monitoring-stats.html#", "anchor": "", "column": "replay_lag", "locale": "zh-Hans", "version": "17", "build_id": 105, "page_key": "monitoring-stats.html", "extraction": "exact-catalog-field", "source_hash": "ad63a74417862b28cba663bd779186633505e5da37845bce5f2e4bf62ee55c2b", "source_revision": "unknown:rendered-translation-baseline", "translation_revision": "git:b1b500221dbe5437cfca004d6b04d3f6e422765d;html-sha256:7340767258d21c21b36f373f1fff6bab2be18e0daca13a865129db6105c09efd"}, "body_sha256": "bdefe3a990ea7fd9118dbd0e88a45e60163f75fe4b46be0a900909168ad168b3", "runtime_rerun": false, "authored_translation": "source-derived-structured-summary", "source_facts_revision": "dd27f2b3c59e73ed14aa3324901242bf69a032a6347805f274e6260322d42979"}, "sections": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["pg_stat_replication \u89c6\u56fe\u4e3a\u6bcf\u4e2a WAL \u53d1\u9001\u8fdb\u7a0b\u5305\u542b\u4e00\u884c\uff0c\u663e\u793a\u6709\u5173\u590d\u5236\u5230\u8be5\u53d1\u9001\u8fdb\u7a0b\u6240\u8fde\u63a5\u5907\u5e93\u7684\u7edf\u8ba1\u4fe1\u606f\u3002\u8fd9\u91cc\u53ea\u5217\u51fa\u76f4\u63a5\u8fde\u63a5\u7684\u5907\u5e93\uff1b\u4e0d\u5305\u542b\u4e0b\u6e38\u5907\u5e93\u7684\u4fe1\u606f\u3002"]}, {"title": "\u91c7\u96c6\u4e0e\u91cd\u7f6e\u8bed\u4e49", "paragraphs": ["\u91cd\u7f6e\u8303\u56f4\u548c\u53ef\u89c1\u6027\u8bf7\u53c2\u9605\u4e0b\u65b9\u540c\u7248\u672c\u7684\u7edf\u8ba1\u4fe1\u606f\u6536\u96c6\u4e0e\u89c6\u56fe\u6587\u6863\u3002\u4e0d\u6839\u636e\u5b57\u6bb5\u540d\u79f0\u63a8\u65ad\u5404\u5b57\u6bb5\u7684\u91cd\u7f6e\u89c4\u5219\u3002"]}, {"code": "SELECT replay_lag FROM pg_catalog.pg_stat_replication;", "title": "\u67e5\u770b\u6b64\u5b57\u6bb5", "paragraphs": ["\u793a\u4f8b\u67e5\u8be2\uff1b\u4e0d\u8868\u793a\u5df2\u6267\u884c\uff0c\u4e5f\u4e0d\u63d0\u4f9b\u5b9e\u6d4b\u503c\u3002"]}], "description_zh": "\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002", "description_zh_html": "<p>pg_stat_replication.replay_lag \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_replication</code></dd><dt>\u5b57\u6bb5</dt><dd><code>replay_lag</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>interval</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002</p><p><a href=\"/zh/docs/17/monitoring-stats.html#\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>"}, "summary": "\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002", "version": "17", "link_map": {"/zh/docs/17/monitoring-stats.html": "/docs/17/monitoring-stats.html"}, "body_html": "<p>pg_stat_replication.replay_lag \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_replication</code></dd><dt>\u5b57\u6bb5</dt><dd><code>replay_lag</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>interval</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002</p><p><a href=\"/zh/docs/17/monitoring-stats.html\" rel=\"nofollow\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>", "body_sha256": "d10ce2b1d0f433b6bf4edce30ac8753f89b3492119d71ce49c9ca3abf36377f9", "content_hash": "784274b8c67fb08df93073aaad3bbf3dfb60f421beb216f329f8aaa0fc767de1", "source_database": "center", "source_revision": "dd27f2b3c59e73ed14aa3324901242bf69a032a6347805f274e6260322d42979"}, "signature": "SELECT replay_lag FROM pg_catalog.pg_stat_replication;", "tables_zh": [], "documented": true, "description": ["\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002"], "manual_html": "", "manual_path": "/docs/17/monitoring-stats.html", "sections_zh": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["pg_stat_replication \u89c6\u56fe\u4e3a\u6bcf\u4e2a WAL \u53d1\u9001\u8fdb\u7a0b\u5305\u542b\u4e00\u884c\uff0c\u663e\u793a\u6709\u5173\u590d\u5236\u5230\u8be5\u53d1\u9001\u8fdb\u7a0b\u6240\u8fde\u63a5\u5907\u5e93\u7684\u7edf\u8ba1\u4fe1\u606f\u3002\u8fd9\u91cc\u53ea\u5217\u51fa\u76f4\u63a5\u8fde\u63a5\u7684\u5907\u5e93\uff1b\u4e0d\u5305\u542b\u4e0b\u6e38\u5907\u5e93\u7684\u4fe1\u606f\u3002"]}, {"title": "\u91c7\u96c6\u4e0e\u91cd\u7f6e\u8bed\u4e49", "paragraphs": ["\u91cd\u7f6e\u8303\u56f4\u548c\u53ef\u89c1\u6027\u8bf7\u53c2\u9605\u4e0b\u65b9\u540c\u7248\u672c\u7684\u7edf\u8ba1\u4fe1\u606f\u6536\u96c6\u4e0e\u89c6\u56fe\u6587\u6863\u3002\u4e0d\u6839\u636e\u5b57\u6bb5\u540d\u79f0\u63a8\u65ad\u5404\u5b57\u6bb5\u7684\u91cd\u7f6e\u89c4\u5219\u3002"]}, {"code": "SELECT replay_lag FROM pg_catalog.pg_stat_replication;", "title": "\u67e5\u770b\u6b64\u5b57\u6bb5", "paragraphs": ["\u793a\u4f8b\u67e5\u8be2\uff1b\u4e0d\u8868\u793a\u5df2\u6267\u884c\uff0c\u4e5f\u4e0d\u63d0\u4f9b\u5b9e\u6d4b\u503c\u3002"]}], "source_only": false, "localization": {"status": "complete", "sources": [{"url": "/docs/17/monitoring-stats.html", "method": "same-major semantic node", "sha256": "5cd346cc373a5a006b07664d9969d4c630c8ea55dea33b8f3211f061ce43e54f", "language": "zh", "matched_nodes": ["#MONITORING-STATS/div[8]/div[3]/div[1]/table[0]/tbody[2]/tr[16]/td[0]/p[1]", "#MONITORING-STATS/div[8]/p[2]"]}], "language": "zh", "original_text": {"/versions/17/description/0": "Time elapsed between flushing recent WAL locally and receiving notification that this standby server has written, flushed and applied it. This can be used to gauge the delay that synchronous_commit level remote_apply incurred while committing if this server was configured as a synchronous standby.", "/versions/17/facts/0/label": "View", "/versions/17/facts/1/label": "Field", "/versions/17/facts/2/label": "SQL type", "/versions/17/facts/3/label": "Units named in the field definition", "/versions/17/facts/3/value": "Not specified", "/versions/17/facts/4/label": "Reset observation", "/versions/17/facts/4/value": "No stats_reset field is documented for this view", "/versions/17/related/0/label": "pg_stat_replication columns", "/versions/17/related/1/label": "Statistics collection and reset functions", "/versions/17/sections/0/title": "View semantics", "/versions/17/sections/1/title": "Collection and reset context", "/versions/17/sections/2/title": "Inspect this field", "/versions/17/sections/0/paragraphs/0": "The pg_stat_replication view will contain one row per WAL sender process, showing statistics about replication to that sender's connected standby server. Only directly connected standbys are listed; no information is available about downstream standby servers.", "/versions/17/sections/1/paragraphs/0": "Read the same-version statistics collection and view documentation below for reset scope and visibility. No per-field reset rule is inferred from the field name.", "/versions/17/sections/2/paragraphs/0": "Example query; no execution result or measured value is asserted."}, "fallback_fields": [], "source_language": "en", "original_snapshot_sha256": "50cb93a836a8ddba5e2c2bcce6db9ff5c02fd70ab3c28b9586cebb7e1a557f7d", "canonical_center_text_hash": "784274b8c67fb08df93073aaad3bbf3dfb60f421beb216f329f8aaa0fc767de1"}, "description_zh": "\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002", "comparison_data": {"view": "pg_stat_replication", "field": "replay_lag", "sql_type": "interval", "units_mentioned": []}, "comparison_hash": "97052561d644196937057eebf96b5d5b3a43e3afacf041e0c1f4ceed6f66ea5e", "manual_language": "zh", "units_mentioned": [], "description_zh_html": "<p>pg_stat_replication.replay_lag \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_replication</code></dd><dt>\u5b57\u6bb5</dt><dd><code>replay_lag</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>interval</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002</p><p><a href=\"/zh/docs/17/monitoring-stats.html\" rel=\"nofollow\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>"}, "18": {"view": "pg_stat_replication", "facts": [{"label": "\u89c6\u56fe", "value": "pg_stat_replication"}, {"label": "\u5b57\u6bb5", "value": "replay_lag"}, {"label": "SQL \u7c7b\u578b", "value": "interval"}, {"label": "\u5b57\u6bb5\u5b9a\u4e49\u8bb0\u8f7d\u7684\u5355\u4f4d", "value": "\u672a\u6307\u5b9a"}, {"label": "\u91cd\u7f6e\u6761\u4ef6", "value": "\u624b\u518c\u672a\u4e3a\u6b64\u89c6\u56fe\u8bb0\u8f7d stats_reset \u5b57\u6bb5"}], "field": "replay_lag", "tables": [], "related": [{"url": "/wiki/catalog/pg_stat_replication/?v=18", "label": "pg_stat_replication \u5b57\u6bb5"}, {"url": "/docs/18/monitoring-stats.html", "label": "\u7edf\u8ba1\u6536\u96c6\u4e0e\u91cd\u7f6e\u51fd\u6570"}], "release": {"ref": "https://ftp.postgresql.org/pub/source/v18.6/postgresql-18.6.tar.bz2", "label": "18.6", "major": "18", "channel": "stable", "revision": "555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f"}, "sources": [{"url": "/docs/18/monitoring-stats.html#PG-STAT-REPLICATION-VIEW", "path": "monitoring-stats.html", "label": "PostgreSQL 18 English manual", "sha256": "aa979eed08627fbf715a9d792094a162a73671db5af810f3ab2aad3e073d5722"}], "zh_from": {"kind": "same-version-chinese-manual-with-source-derived-structured-summary", "manual": {"url": "/zh/docs/18/monitoring-stats.html#", "anchor": "", "column": "replay_lag", "locale": "zh-Hans", "version": "18", "build_id": 107, "page_key": "monitoring-stats.html", "extraction": "exact-catalog-field", "source_hash": "0274aac7991450316bcf7be44635653b6d896fb00e321242c1b6674cb05c2e53", "source_revision": "unknown:rendered-translation-baseline", "translation_revision": "git:b1b500221dbe5437cfca004d6b04d3f6e422765d;html-sha256:08e987a66af27b98444a8057c256314eafa13611a3fb9e888214fc436824244b"}, "body_sha256": "64acedce1fecb48ac0c2456ed1272022a4e9e346957775c8c6428180e6a95df4", "runtime_rerun": false, "authored_translation": "source-derived-structured-summary", "source_facts_revision": "555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f"}, "facts_zh": [{"label": "\u89c6\u56fe", "value": "pg_stat_replication"}, {"label": "\u5b57\u6bb5", "value": "replay_lag"}, {"label": "SQL \u7c7b\u578b", "value": "interval"}, {"label": "\u5b57\u6bb5\u5b9a\u4e49\u8bb0\u8f7d\u7684\u5355\u4f4d", "value": "\u672a\u6307\u5b9a"}, {"label": "\u91cd\u7f6e\u6761\u4ef6", "value": "\u624b\u518c\u672a\u4e3a\u6b64\u89c6\u56fe\u8bb0\u8f7d stats_reset \u5b57\u6bb5"}], "sections": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["pg_stat_replication \u89c6\u56fe\u4e3a\u6bcf\u4e2a WAL \u53d1\u9001\u8fdb\u7a0b\u5305\u542b\u4e00\u884c\uff0c\u663e\u793a\u6709\u5173\u590d\u5236\u5230\u8be5\u53d1\u9001\u8fdb\u7a0b\u6240\u8fde\u63a5\u5907\u5e93\u7684\u7edf\u8ba1\u4fe1\u606f\u3002\u8fd9\u91cc\u53ea\u5217\u51fa\u76f4\u63a5\u8fde\u63a5\u7684\u5907\u5e93\uff1b\u4e0d\u5305\u542b\u4e0b\u6e38\u5907\u5e93\u7684\u4fe1\u606f\u3002"]}, {"title": "\u91c7\u96c6\u4e0e\u91cd\u7f6e\u8bed\u4e49", "paragraphs": ["\u91cd\u7f6e\u8303\u56f4\u548c\u53ef\u89c1\u6027\u8bf7\u53c2\u9605\u4e0b\u65b9\u540c\u7248\u672c\u7684\u7edf\u8ba1\u4fe1\u606f\u6536\u96c6\u4e0e\u89c6\u56fe\u6587\u6863\u3002\u4e0d\u6839\u636e\u5b57\u6bb5\u540d\u79f0\u63a8\u65ad\u5404\u5b57\u6bb5\u7684\u91cd\u7f6e\u89c4\u5219\u3002"]}, {"code": "SELECT replay_lag FROM pg_catalog.pg_stat_replication;", "title": "\u67e5\u770b\u6b64\u5b57\u6bb5", "paragraphs": ["\u793a\u4f8b\u67e5\u8be2\uff1b\u4e0d\u8868\u793a\u5df2\u6267\u884c\uff0c\u4e5f\u4e0d\u63d0\u4f9b\u5b9e\u6d4b\u503c\u3002"]}], "sql_type": "interval", "center_zh": {"title": "pg_stat_replication.replay_lag", "locale": "zh-Hans", "source": {"key": "pg_stat_replication-replay_lag", "locale": "zh-Hans", "version": "18", "text_hash": "3e67a1a452275ae95f8d0ae80265ce7e843a4c5e23f1c019dc28af5b041d8a04", "collection": "metric", "dataset_hash": "7c31b524dfe136022d39a6ae8dcfac6b3bbd5f8fdaf422536599981252aff0c9", "source_database": "center", "source_revision": "555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f"}, "payload": {"facts": [{"label": "\u89c6\u56fe", "value": "pg_stat_replication"}, {"label": "\u5b57\u6bb5", "value": "replay_lag"}, {"label": "SQL \u7c7b\u578b", "value": "interval"}, {"label": "\u5b57\u6bb5\u5b9a\u4e49\u8bb0\u8f7d\u7684\u5355\u4f4d", "value": "\u672a\u6307\u5b9a"}, {"label": "\u91cd\u7f6e\u6761\u4ef6", "value": "\u624b\u518c\u672a\u4e3a\u6b64\u89c6\u56fe\u8bb0\u8f7d stats_reset \u5b57\u6bb5"}], "tables": [], "zh_from": {"kind": "same-version-chinese-manual-with-source-derived-structured-summary", "manual": {"url": "/zh/docs/18/monitoring-stats.html#", "anchor": "", "column": "replay_lag", "locale": "zh-Hans", "version": "18", "build_id": 107, "page_key": "monitoring-stats.html", "extraction": "exact-catalog-field", "source_hash": "0274aac7991450316bcf7be44635653b6d896fb00e321242c1b6674cb05c2e53", "source_revision": "unknown:rendered-translation-baseline", "translation_revision": "git:b1b500221dbe5437cfca004d6b04d3f6e422765d;html-sha256:08e987a66af27b98444a8057c256314eafa13611a3fb9e888214fc436824244b"}, "body_sha256": "64acedce1fecb48ac0c2456ed1272022a4e9e346957775c8c6428180e6a95df4", "runtime_rerun": false, "authored_translation": "source-derived-structured-summary", "source_facts_revision": "555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f"}, "sections": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["pg_stat_replication \u89c6\u56fe\u4e3a\u6bcf\u4e2a WAL \u53d1\u9001\u8fdb\u7a0b\u5305\u542b\u4e00\u884c\uff0c\u663e\u793a\u6709\u5173\u590d\u5236\u5230\u8be5\u53d1\u9001\u8fdb\u7a0b\u6240\u8fde\u63a5\u5907\u5e93\u7684\u7edf\u8ba1\u4fe1\u606f\u3002\u8fd9\u91cc\u53ea\u5217\u51fa\u76f4\u63a5\u8fde\u63a5\u7684\u5907\u5e93\uff1b\u4e0d\u5305\u542b\u4e0b\u6e38\u5907\u5e93\u7684\u4fe1\u606f\u3002"]}, {"title": "\u91c7\u96c6\u4e0e\u91cd\u7f6e\u8bed\u4e49", "paragraphs": ["\u91cd\u7f6e\u8303\u56f4\u548c\u53ef\u89c1\u6027\u8bf7\u53c2\u9605\u4e0b\u65b9\u540c\u7248\u672c\u7684\u7edf\u8ba1\u4fe1\u606f\u6536\u96c6\u4e0e\u89c6\u56fe\u6587\u6863\u3002\u4e0d\u6839\u636e\u5b57\u6bb5\u540d\u79f0\u63a8\u65ad\u5404\u5b57\u6bb5\u7684\u91cd\u7f6e\u89c4\u5219\u3002"]}, {"code": "SELECT replay_lag FROM pg_catalog.pg_stat_replication;", "title": "\u67e5\u770b\u6b64\u5b57\u6bb5", "paragraphs": ["\u793a\u4f8b\u67e5\u8be2\uff1b\u4e0d\u8868\u793a\u5df2\u6267\u884c\uff0c\u4e5f\u4e0d\u63d0\u4f9b\u5b9e\u6d4b\u503c\u3002"]}], "description_zh": "\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002", "description_zh_html": "<p>pg_stat_replication.replay_lag \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_replication</code></dd><dt>\u5b57\u6bb5</dt><dd><code>replay_lag</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>interval</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002</p><p><a href=\"/zh/docs/18/monitoring-stats.html#\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>"}, "summary": "\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002", "version": "18", "link_map": {"/zh/docs/18/monitoring-stats.html": "/docs/18/monitoring-stats.html"}, "body_html": "<p>pg_stat_replication.replay_lag \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_replication</code></dd><dt>\u5b57\u6bb5</dt><dd><code>replay_lag</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>interval</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002</p><p><a href=\"/zh/docs/18/monitoring-stats.html\" rel=\"nofollow\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>", "body_sha256": "ec935cafcbda78ba94450e4f26e0007bda314a6ec025ad47a5c51bc5cb694a5b", "content_hash": "3e67a1a452275ae95f8d0ae80265ce7e843a4c5e23f1c019dc28af5b041d8a04", "source_database": "center", "source_revision": "555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f"}, "signature": "SELECT replay_lag FROM pg_catalog.pg_stat_replication;", "tables_zh": [], "documented": true, "description": ["\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002"], "manual_html": "", "manual_path": "/docs/18/monitoring-stats.html", "sections_zh": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["pg_stat_replication \u89c6\u56fe\u4e3a\u6bcf\u4e2a WAL \u53d1\u9001\u8fdb\u7a0b\u5305\u542b\u4e00\u884c\uff0c\u663e\u793a\u6709\u5173\u590d\u5236\u5230\u8be5\u53d1\u9001\u8fdb\u7a0b\u6240\u8fde\u63a5\u5907\u5e93\u7684\u7edf\u8ba1\u4fe1\u606f\u3002\u8fd9\u91cc\u53ea\u5217\u51fa\u76f4\u63a5\u8fde\u63a5\u7684\u5907\u5e93\uff1b\u4e0d\u5305\u542b\u4e0b\u6e38\u5907\u5e93\u7684\u4fe1\u606f\u3002"]}, {"title": "\u91c7\u96c6\u4e0e\u91cd\u7f6e\u8bed\u4e49", "paragraphs": ["\u91cd\u7f6e\u8303\u56f4\u548c\u53ef\u89c1\u6027\u8bf7\u53c2\u9605\u4e0b\u65b9\u540c\u7248\u672c\u7684\u7edf\u8ba1\u4fe1\u606f\u6536\u96c6\u4e0e\u89c6\u56fe\u6587\u6863\u3002\u4e0d\u6839\u636e\u5b57\u6bb5\u540d\u79f0\u63a8\u65ad\u5404\u5b57\u6bb5\u7684\u91cd\u7f6e\u89c4\u5219\u3002"]}, {"code": "SELECT replay_lag FROM pg_catalog.pg_stat_replication;", "title": "\u67e5\u770b\u6b64\u5b57\u6bb5", "paragraphs": ["\u793a\u4f8b\u67e5\u8be2\uff1b\u4e0d\u8868\u793a\u5df2\u6267\u884c\uff0c\u4e5f\u4e0d\u63d0\u4f9b\u5b9e\u6d4b\u503c\u3002"]}], "source_only": false, "localization": {"status": "complete", "sources": [{"url": "/docs/18/monitoring-stats.html", "method": "same-major semantic node", "sha256": "ff0b10c5fb4b75c247e38b7ad0e8a50fa0b6ebaa25e68c8c67a1ca972bda40b1", "language": "zh", "matched_nodes": ["#MONITORING-STATS/div[8]/div[3]/div[1]/table[0]/tbody[2]/tr[16]/td[0]/p[1]", "#MONITORING-STATS/div[8]/p[2]"]}], "language": "zh", "original_text": {"/versions/18/description/0": "Time elapsed between flushing recent WAL locally and receiving notification that this standby server has written, flushed and applied it. This can be used to gauge the delay that synchronous_commit level remote_apply incurred while committing if this server was configured as a synchronous standby.", "/versions/18/facts/0/label": "View", "/versions/18/facts/1/label": "Field", "/versions/18/facts/2/label": "SQL type", "/versions/18/facts/3/label": "Units named in the field definition", "/versions/18/facts/3/value": "Not specified", "/versions/18/facts/4/label": "Reset observation", "/versions/18/facts/4/value": "No stats_reset field is documented for this view", "/versions/18/related/0/label": "pg_stat_replication columns", "/versions/18/related/1/label": "Statistics collection and reset functions", "/versions/18/sections/0/title": "View semantics", "/versions/18/sections/1/title": "Collection and reset context", "/versions/18/sections/2/title": "Inspect this field", "/versions/18/sections/0/paragraphs/0": "The pg_stat_replication view will contain one row per WAL sender process, showing statistics about replication to that sender's connected standby server. Only directly connected standbys are listed; no information is available about downstream standby servers.", "/versions/18/sections/1/paragraphs/0": "Read the same-version statistics collection and view documentation below for reset scope and visibility. No per-field reset rule is inferred from the field name.", "/versions/18/sections/2/paragraphs/0": "Example query; no execution result or measured value is asserted."}, "fallback_fields": [], "source_language": "en", "original_snapshot_sha256": "a28f289f7bec85a71d41d698fd4624abcb1b511578895368df61c8f60e222852", "canonical_center_text_hash": "3e67a1a452275ae95f8d0ae80265ce7e843a4c5e23f1c019dc28af5b041d8a04"}, "description_zh": "\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002", "comparison_data": {"view": "pg_stat_replication", "field": "replay_lag", "sql_type": "interval", "units_mentioned": []}, "comparison_hash": "97052561d644196937057eebf96b5d5b3a43e3afacf041e0c1f4ceed6f66ea5e", "manual_language": "zh", "units_mentioned": [], "description_zh_html": "<p>pg_stat_replication.replay_lag \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_replication</code></dd><dt>\u5b57\u6bb5</dt><dd><code>replay_lag</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>interval</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002</p><p><a href=\"/zh/docs/18/monitoring-stats.html\" rel=\"nofollow\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>", "center_zh_rendered": "<p>pg_stat_replication.replay_lag \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_replication</code></dd><dt>\u5b57\u6bb5</dt><dd><code>replay_lag</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>interval</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002</p><p><a href=\"/docs/18/monitoring-stats.html\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>"}, "19": {"view": "pg_stat_replication", "facts": [{"label": "\u89c6\u56fe", "value": "pg_stat_replication"}, {"label": "\u5b57\u6bb5", "value": "replay_lag"}, {"label": "SQL \u7c7b\u578b", "value": "interval"}, {"label": "\u5b57\u6bb5\u5b9a\u4e49\u8bb0\u8f7d\u7684\u5355\u4f4d", "value": "\u672a\u6307\u5b9a"}, {"label": "\u91cd\u7f6e\u6761\u4ef6", "value": "\u624b\u518c\u672a\u4e3a\u6b64\u89c6\u56fe\u8bb0\u8f7d stats_reset \u5b57\u6bb5"}], "field": "replay_lag", "tables": [], "related": [{"url": "/wiki/catalog/pg_stat_replication/?v=19", "label": "pg_stat_replication \u5b57\u6bb5"}, {"url": "/docs/19/monitoring-stats.html", "label": "\u7edf\u8ba1\u6536\u96c6\u4e0e\u91cd\u7f6e\u51fd\u6570"}], "release": {"ref": "https://ftp.postgresql.org/pub/source/v19rc1/postgresql-19rc1.tar.bz2", "label": "19rc1", "major": 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["\u793a\u4f8b\u67e5\u8be2\uff1b\u4e0d\u8868\u793a\u5df2\u6267\u884c\uff0c\u4e5f\u4e0d\u63d0\u4f9b\u5b9e\u6d4b\u503c\u3002"]}], "sql_type": "interval", "center_zh": {"title": "pg_stat_replication.replay_lag", "locale": "zh-Hans", "source": {"key": "pg_stat_replication-replay_lag", "locale": "zh-Hans", "version": "19", "text_hash": "e5babf460fcd5c57e27567155e535d5deec937293b392ddd2bcced16dfd1105f", "collection": "metric", "dataset_hash": "7c31b524dfe136022d39a6ae8dcfac6b3bbd5f8fdaf422536599981252aff0c9", "source_database": "center", "source_revision": "af105fc8e960fc836a09fc2cd7f582b49fd17675d9d36631abe3a565bfd7d701"}, "payload": {"facts": [{"label": "\u89c6\u56fe", "value": "pg_stat_replication"}, {"label": "\u5b57\u6bb5", "value": "replay_lag"}, {"label": "SQL \u7c7b\u578b", "value": "interval"}, {"label": "\u5b57\u6bb5\u5b9a\u4e49\u8bb0\u8f7d\u7684\u5355\u4f4d", "value": "\u672a\u6307\u5b9a"}, {"label": "\u91cd\u7f6e\u6761\u4ef6", "value": "\u624b\u518c\u672a\u4e3a\u6b64\u89c6\u56fe\u8bb0\u8f7d stats_reset \u5b57\u6bb5"}], "tables": [], "zh_from": {"kind": "same-version-chinese-manual-with-source-derived-structured-summary", "manual": {"url": "/zh/docs/19/monitoring-stats.html#", "anchor": "", "column": "replay_lag", "locale": "zh-Hans", "version": "19", "build_id": 109, "page_key": "monitoring-stats.html", "extraction": "exact-catalog-field", "source_hash": "38f7e14f495b50d93ec5fe73e5630957512a3cbd01aa83c8d7dd33abfeedbb62", "source_revision": "sha256:af105fc8e960fc836a09fc2cd7f582b49fd17675d9d36631abe3a565bfd7d701", "translation_revision": "git:b1b500221dbe5437cfca004d6b04d3f6e422765d;html-sha256:65fda1f1b62a89992b84014c9157e61b67dbe8190e93945826efec668fad038c"}, "body_sha256": "48abe775e5405d323804de78b949d76e3b7199c4b9ab8555669542b9d9e7a9b2", "runtime_rerun": false, "authored_translation": "source-derived-structured-summary", "source_facts_revision": "af105fc8e960fc836a09fc2cd7f582b49fd17675d9d36631abe3a565bfd7d701"}, "sections": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["pg_stat_replication \u89c6\u56fe\u4e3a\u6bcf\u4e2a WAL \u53d1\u9001\u8fdb\u7a0b\u5305\u542b\u4e00\u884c\uff0c\u663e\u793a\u6709\u5173\u590d\u5236\u5230\u8be5\u53d1\u9001\u8fdb\u7a0b\u6240\u8fde\u63a5\u5907\u5e93\u7684\u7edf\u8ba1\u4fe1\u606f\u3002\u8fd9\u91cc\u53ea\u5217\u51fa\u76f4\u63a5\u8fde\u63a5\u7684\u5907\u5e93\uff1b\u4e0d\u5305\u542b\u4e0b\u6e38\u5907\u5e93\u7684\u4fe1\u606f\u3002"]}, {"title": "\u91c7\u96c6\u4e0e\u91cd\u7f6e\u8bed\u4e49", "paragraphs": ["\u91cd\u7f6e\u8303\u56f4\u548c\u53ef\u89c1\u6027\u8bf7\u53c2\u9605\u4e0b\u65b9\u540c\u7248\u672c\u7684\u7edf\u8ba1\u4fe1\u606f\u6536\u96c6\u4e0e\u89c6\u56fe\u6587\u6863\u3002\u4e0d\u6839\u636e\u5b57\u6bb5\u540d\u79f0\u63a8\u65ad\u5404\u5b57\u6bb5\u7684\u91cd\u7f6e\u89c4\u5219\u3002"]}, {"code": "SELECT replay_lag FROM pg_catalog.pg_stat_replication;", "title": "\u67e5\u770b\u6b64\u5b57\u6bb5", "paragraphs": ["\u793a\u4f8b\u67e5\u8be2\uff1b\u4e0d\u8868\u793a\u5df2\u6267\u884c\uff0c\u4e5f\u4e0d\u63d0\u4f9b\u5b9e\u6d4b\u503c\u3002"]}], "description_zh": "\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002", "description_zh_html": "<p>pg_stat_replication.replay_lag \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_replication</code></dd><dt>\u5b57\u6bb5</dt><dd><code>replay_lag</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>interval</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002</p><p><a href=\"/zh/docs/19/monitoring-stats.html#\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>"}, "summary": "\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002", "version": "19", "link_map": {"/zh/docs/19/monitoring-stats.html": "/docs/19/monitoring-stats.html"}, "body_html": "<p>pg_stat_replication.replay_lag \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_replication</code></dd><dt>\u5b57\u6bb5</dt><dd><code>replay_lag</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>interval</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002</p><p><a href=\"/zh/docs/19/monitoring-stats.html\" rel=\"nofollow\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>", "body_sha256": "9bfddd876bbe3b1b632f62d38d87773b8700a019d069911ff77cb72623c11aba", "content_hash": "e5babf460fcd5c57e27567155e535d5deec937293b392ddd2bcced16dfd1105f", "source_database": "center", "source_revision": "af105fc8e960fc836a09fc2cd7f582b49fd17675d9d36631abe3a565bfd7d701"}, "signature": "SELECT replay_lag FROM pg_catalog.pg_stat_replication;", "tables_zh": [], "documented": true, "description": ["\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002"], "manual_html": "", "manual_path": "/docs/19/monitoring-stats.html", "sections_zh": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["pg_stat_replication \u89c6\u56fe\u4e3a\u6bcf\u4e2a WAL \u53d1\u9001\u8fdb\u7a0b\u5305\u542b\u4e00\u884c\uff0c\u663e\u793a\u6709\u5173\u590d\u5236\u5230\u8be5\u53d1\u9001\u8fdb\u7a0b\u6240\u8fde\u63a5\u5907\u5e93\u7684\u7edf\u8ba1\u4fe1\u606f\u3002\u8fd9\u91cc\u53ea\u5217\u51fa\u76f4\u63a5\u8fde\u63a5\u7684\u5907\u5e93\uff1b\u4e0d\u5305\u542b\u4e0b\u6e38\u5907\u5e93\u7684\u4fe1\u606f\u3002"]}, {"title": "\u91c7\u96c6\u4e0e\u91cd\u7f6e\u8bed\u4e49", "paragraphs": ["\u91cd\u7f6e\u8303\u56f4\u548c\u53ef\u89c1\u6027\u8bf7\u53c2\u9605\u4e0b\u65b9\u540c\u7248\u672c\u7684\u7edf\u8ba1\u4fe1\u606f\u6536\u96c6\u4e0e\u89c6\u56fe\u6587\u6863\u3002\u4e0d\u6839\u636e\u5b57\u6bb5\u540d\u79f0\u63a8\u65ad\u5404\u5b57\u6bb5\u7684\u91cd\u7f6e\u89c4\u5219\u3002"]}, {"code": "SELECT replay_lag FROM pg_catalog.pg_stat_replication;", "title": "\u67e5\u770b\u6b64\u5b57\u6bb5", "paragraphs": ["\u793a\u4f8b\u67e5\u8be2\uff1b\u4e0d\u8868\u793a\u5df2\u6267\u884c\uff0c\u4e5f\u4e0d\u63d0\u4f9b\u5b9e\u6d4b\u503c\u3002"]}], "source_only": false, "localization": {"status": "complete", "sources": [{"url": "/docs/19/monitoring-stats.html", "method": "same-major semantic node", "sha256": "024434288428f15560d48c78af2e836ca669a4217589cfaeb2f16b72123b501a", "language": "zh", "matched_nodes": ["#MONITORING-STATS/div[8]/div[3]/div[1]/table[0]/tbody[2]/tr[16]/td[0]/p[1]", "#MONITORING-STATS/div[8]/p[2]"]}], "language": "zh", "original_text": {"/versions/19/description/0": "Time elapsed between flushing recent WAL locally and receiving notification that this standby server has written, flushed and applied it. This can be used to gauge the delay that synchronous_commit level remote_apply incurred while committing if this server was configured as a synchronous standby.", "/versions/19/facts/0/label": "View", "/versions/19/facts/1/label": "Field", "/versions/19/facts/2/label": "SQL type", "/versions/19/facts/3/label": "Units named in the field definition", "/versions/19/facts/3/value": "Not specified", "/versions/19/facts/4/label": "Reset observation", "/versions/19/facts/4/value": "No stats_reset field is documented for this view", "/versions/19/related/0/label": "pg_stat_replication columns", "/versions/19/related/1/label": "Statistics collection and reset functions", "/versions/19/sections/0/title": "View semantics", "/versions/19/sections/1/title": "Collection and reset context", "/versions/19/sections/2/title": "Inspect this field", "/versions/19/sections/0/paragraphs/0": "The pg_stat_replication view will contain one row per WAL sender process, showing statistics about replication to that sender's connected standby server. Only directly connected standbys are listed; no information is available about downstream standby servers.", "/versions/19/sections/1/paragraphs/0": "Read the same-version statistics collection and view documentation below for reset scope and visibility. No per-field reset rule is inferred from the field name.", "/versions/19/sections/2/paragraphs/0": "Example query; no execution result or measured value is asserted."}, "fallback_fields": [], "source_language": "en", "original_snapshot_sha256": "e1e08bd21cebd54ffdd0af8237426c893d3d3bc8dcb716bafe1b2063e9e1497b", "canonical_center_text_hash": "e5babf460fcd5c57e27567155e535d5deec937293b392ddd2bcced16dfd1105f"}, "description_zh": "\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002", "comparison_data": {"view": "pg_stat_replication", "field": "replay_lag", "sql_type": "interval", "units_mentioned": []}, "comparison_hash": "97052561d644196937057eebf96b5d5b3a43e3afacf041e0c1f4ceed6f66ea5e", "manual_language": "zh", "units_mentioned": [], "description_zh_html": "<p>pg_stat_replication.replay_lag \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_replication</code></dd><dt>\u5b57\u6bb5</dt><dd><code>replay_lag</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>interval</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002</p><p><a href=\"/zh/docs/19/monitoring-stats.html\" rel=\"nofollow\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>", "source_revalidation": {"kind": "static-same-version-source-and-manual-replay", "audit": "wiki-audit-20261023", "runtime_rerun": false, "compared_fields": "documented field type and description, source-only view expressions", "source_revision": "af105fc8e960fc836a09fc2cd7f582b49fd17675d9d36631abe3a565bfd7d701", "previous_source_revision": "83157ee9c599d03b2f7a3d73ef3a56ec24e0e79cc2b3501a64d1364f56398c86"}}, "20": {"view": "pg_stat_replication", "facts": [{"label": "\u89c6\u56fe", "value": "pg_stat_replication"}, {"label": "\u5b57\u6bb5", "value": "replay_lag"}, {"label": "SQL \u7c7b\u578b", "value": "interval"}, {"label": "\u5b57\u6bb5\u5b9a\u4e49\u8bb0\u8f7d\u7684\u5355\u4f4d", "value": "\u672a\u6307\u5b9a"}, {"label": "\u91cd\u7f6e\u6761\u4ef6", "value": "\u624b\u518c\u672a\u4e3a\u6b64\u89c6\u56fe\u8bb0\u8f7d stats_reset \u5b57\u6bb5"}], "field": "replay_lag", "tables": [], "related": [{"url": "/wiki/catalog/pg_stat_replication/?v=20", "label": "pg_stat_replication \u5b57\u6bb5"}, {"url": "/docs/devel/monitoring-stats.html", "label": "\u7edf\u8ba1\u6536\u96c6\u4e0e\u91cd\u7f6e\u51fd\u6570"}], "release": {"ref": "https://ftp.postgresql.org/pub/snapshot/dev/postgresql-snapshot.tar.bz2", "label": "20devel", "major": "20", "channel": "devel", "revision": "49c73aa4c9cacef8ca979276a28ac416c08e9e54c9baee4ae5fd116a35fa13ac", "source_sha256": "49c73aa4c9cacef8ca979276a28ac416c08e9e54c9baee4ae5fd116a35fa13ac", "manual_fingerprint": "4afd3a8e29953000e176877e161458a2febaeaac5a5e16986595d3acc2418c7d", "catalog_fingerprint": "e519e6916a731ce8fb9bca3edb12410227f73e01ccd43fb6f5fb98276f08985f"}, "sources": [{"url": "/docs/devel/monitoring-stats.html#PG-STAT-REPLICATION-VIEW", "path": "monitoring-stats.html", "label": "PostgreSQL 20 English manual", "sha256": "12af0ae255e3b04952990efae8e4e9d07926556da23734d34f43b9a37126c84f"}], "zh_from": {"kind": "same-version-chinese-manual-with-source-derived-structured-summary", "manual": {"url": "/zh/docs/devel/monitoring-stats.html#", "anchor": "", "column": "replay_lag", "locale": "zh-Hans", "version": "20", "build_id": 111, "page_key": "monitoring-stats.html", "extraction": "exact-catalog-field", "source_hash": "2c8d45a2fe11aec2ee727b94ac68e60b7a0523a1aa2d43629f9368d42f544d40", "source_revision": "sha256:49c73aa4c9cacef8ca979276a28ac416c08e9e54c9baee4ae5fd116a35fa13ac", "translation_revision": "git:b1b500221dbe5437cfca004d6b04d3f6e422765d;html-sha256:98c980963b401d40bd50df72b909e7523e3148b8fdb48edd897de2efb67e5235"}, "body_sha256": "453626589d2008d27150401030122e76bec9275b519bc152ea71a54e19349b1d", "runtime_rerun": false, "authored_translation": "source-derived-structured-summary", "source_facts_revision": "49c73aa4c9cacef8ca979276a28ac416c08e9e54c9baee4ae5fd116a35fa13ac"}, "facts_zh": [{"label": "\u89c6\u56fe", "value": "pg_stat_replication"}, {"label": "\u5b57\u6bb5", "value": "replay_lag"}, {"label": "SQL \u7c7b\u578b", "value": "interval"}, {"label": "\u5b57\u6bb5\u5b9a\u4e49\u8bb0\u8f7d\u7684\u5355\u4f4d", "value": "\u672a\u6307\u5b9a"}, {"label": "\u91cd\u7f6e\u6761\u4ef6", "value": "\u624b\u518c\u672a\u4e3a\u6b64\u89c6\u56fe\u8bb0\u8f7d stats_reset \u5b57\u6bb5"}], "sections": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["pg_stat_replication \u89c6\u56fe\u4e3a\u6bcf\u4e2a WAL \u53d1\u9001\u8fdb\u7a0b\u5305\u542b\u4e00\u884c\uff0c\u663e\u793a\u6709\u5173\u590d\u5236\u5230\u8be5\u53d1\u9001\u8fdb\u7a0b\u6240\u8fde\u63a5\u5907\u5e93\u7684\u7edf\u8ba1\u4fe1\u606f\u3002\u8fd9\u91cc\u53ea\u5217\u51fa\u76f4\u63a5\u8fde\u63a5\u7684\u5907\u5e93\uff1b\u4e0d\u5305\u542b\u4e0b\u6e38\u5907\u5e93\u7684\u4fe1\u606f\u3002"]}, {"title": "\u91c7\u96c6\u4e0e\u91cd\u7f6e\u8bed\u4e49", "paragraphs": ["\u91cd\u7f6e\u8303\u56f4\u548c\u53ef\u89c1\u6027\u8bf7\u53c2\u9605\u4e0b\u65b9\u540c\u7248\u672c\u7684\u7edf\u8ba1\u4fe1\u606f\u6536\u96c6\u4e0e\u89c6\u56fe\u6587\u6863\u3002\u4e0d\u6839\u636e\u5b57\u6bb5\u540d\u79f0\u63a8\u65ad\u5404\u5b57\u6bb5\u7684\u91cd\u7f6e\u89c4\u5219\u3002"]}, {"code": "SELECT replay_lag FROM pg_catalog.pg_stat_replication;", "title": "\u67e5\u770b\u6b64\u5b57\u6bb5", "paragraphs": ["\u793a\u4f8b\u67e5\u8be2\uff1b\u4e0d\u8868\u793a\u5df2\u6267\u884c\uff0c\u4e5f\u4e0d\u63d0\u4f9b\u5b9e\u6d4b\u503c\u3002"]}], "sql_type": "interval", "center_zh": {"title": "pg_stat_replication.replay_lag", "locale": "zh-Hans", "source": {"key": "pg_stat_replication-replay_lag", "locale": "zh-Hans", "version": "20", "text_hash": "459030aa4d89dc677bf441610117dc59d7ae3a63aca1b9c29d69566a0dae4350", "collection": "metric", "dataset_hash": "7c31b524dfe136022d39a6ae8dcfac6b3bbd5f8fdaf422536599981252aff0c9", "source_database": "center", "source_revision": "49c73aa4c9cacef8ca979276a28ac416c08e9e54c9baee4ae5fd116a35fa13ac"}, "payload": {"facts": [{"label": "\u89c6\u56fe", "value": "pg_stat_replication"}, {"label": "\u5b57\u6bb5", "value": "replay_lag"}, {"label": "SQL \u7c7b\u578b", "value": "interval"}, {"label": "\u5b57\u6bb5\u5b9a\u4e49\u8bb0\u8f7d\u7684\u5355\u4f4d", "value": "\u672a\u6307\u5b9a"}, {"label": "\u91cd\u7f6e\u6761\u4ef6", "value": "\u624b\u518c\u672a\u4e3a\u6b64\u89c6\u56fe\u8bb0\u8f7d stats_reset \u5b57\u6bb5"}], "tables": [], "zh_from": {"kind": "same-version-chinese-manual-with-source-derived-structured-summary", "manual": {"url": "/zh/docs/devel/monitoring-stats.html#", "anchor": "", "column": "replay_lag", "locale": "zh-Hans", "version": "20", "build_id": 111, "page_key": "monitoring-stats.html", "extraction": "exact-catalog-field", "source_hash": "2c8d45a2fe11aec2ee727b94ac68e60b7a0523a1aa2d43629f9368d42f544d40", "source_revision": "sha256:49c73aa4c9cacef8ca979276a28ac416c08e9e54c9baee4ae5fd116a35fa13ac", "translation_revision": "git:b1b500221dbe5437cfca004d6b04d3f6e422765d;html-sha256:98c980963b401d40bd50df72b909e7523e3148b8fdb48edd897de2efb67e5235"}, "body_sha256": "453626589d2008d27150401030122e76bec9275b519bc152ea71a54e19349b1d", "runtime_rerun": false, "authored_translation": "source-derived-structured-summary", "source_facts_revision": "49c73aa4c9cacef8ca979276a28ac416c08e9e54c9baee4ae5fd116a35fa13ac"}, "sections": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["pg_stat_replication \u89c6\u56fe\u4e3a\u6bcf\u4e2a WAL \u53d1\u9001\u8fdb\u7a0b\u5305\u542b\u4e00\u884c\uff0c\u663e\u793a\u6709\u5173\u590d\u5236\u5230\u8be5\u53d1\u9001\u8fdb\u7a0b\u6240\u8fde\u63a5\u5907\u5e93\u7684\u7edf\u8ba1\u4fe1\u606f\u3002\u8fd9\u91cc\u53ea\u5217\u51fa\u76f4\u63a5\u8fde\u63a5\u7684\u5907\u5e93\uff1b\u4e0d\u5305\u542b\u4e0b\u6e38\u5907\u5e93\u7684\u4fe1\u606f\u3002"]}, {"title": "\u91c7\u96c6\u4e0e\u91cd\u7f6e\u8bed\u4e49", "paragraphs": ["\u91cd\u7f6e\u8303\u56f4\u548c\u53ef\u89c1\u6027\u8bf7\u53c2\u9605\u4e0b\u65b9\u540c\u7248\u672c\u7684\u7edf\u8ba1\u4fe1\u606f\u6536\u96c6\u4e0e\u89c6\u56fe\u6587\u6863\u3002\u4e0d\u6839\u636e\u5b57\u6bb5\u540d\u79f0\u63a8\u65ad\u5404\u5b57\u6bb5\u7684\u91cd\u7f6e\u89c4\u5219\u3002"]}, {"code": "SELECT replay_lag FROM pg_catalog.pg_stat_replication;", "title": "\u67e5\u770b\u6b64\u5b57\u6bb5", "paragraphs": ["\u793a\u4f8b\u67e5\u8be2\uff1b\u4e0d\u8868\u793a\u5df2\u6267\u884c\uff0c\u4e5f\u4e0d\u63d0\u4f9b\u5b9e\u6d4b\u503c\u3002"]}], "description_zh": "\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002", "description_zh_html": "<p>pg_stat_replication.replay_lag \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_replication</code></dd><dt>\u5b57\u6bb5</dt><dd><code>replay_lag</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>interval</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002</p><p><a href=\"/zh/docs/devel/monitoring-stats.html#\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>"}, "summary": "\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002", "version": "20", "link_map": {"/zh/docs/devel/monitoring-stats.html": "/docs/devel/monitoring-stats.html"}, "body_html": "<p>pg_stat_replication.replay_lag \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_replication</code></dd><dt>\u5b57\u6bb5</dt><dd><code>replay_lag</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>interval</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002</p><p><a href=\"/zh/docs/devel/monitoring-stats.html\" rel=\"nofollow\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>", "body_sha256": "937a7c9c27f7f37f11e59319d7854478f466cfa4fe2c4c0d9370c89a90133f62", "content_hash": "459030aa4d89dc677bf441610117dc59d7ae3a63aca1b9c29d69566a0dae4350", "source_database": "center", "source_revision": "49c73aa4c9cacef8ca979276a28ac416c08e9e54c9baee4ae5fd116a35fa13ac"}, "signature": "SELECT replay_lag FROM pg_catalog.pg_stat_replication;", "tables_zh": [], "documented": true, "description": ["\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002"], "manual_html": "", "manual_path": "/docs/devel/monitoring-stats.html", "sections_zh": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["pg_stat_replication \u89c6\u56fe\u4e3a\u6bcf\u4e2a WAL \u53d1\u9001\u8fdb\u7a0b\u5305\u542b\u4e00\u884c\uff0c\u663e\u793a\u6709\u5173\u590d\u5236\u5230\u8be5\u53d1\u9001\u8fdb\u7a0b\u6240\u8fde\u63a5\u5907\u5e93\u7684\u7edf\u8ba1\u4fe1\u606f\u3002\u8fd9\u91cc\u53ea\u5217\u51fa\u76f4\u63a5\u8fde\u63a5\u7684\u5907\u5e93\uff1b\u4e0d\u5305\u542b\u4e0b\u6e38\u5907\u5e93\u7684\u4fe1\u606f\u3002"]}, {"title": "\u91c7\u96c6\u4e0e\u91cd\u7f6e\u8bed\u4e49", "paragraphs": ["\u91cd\u7f6e\u8303\u56f4\u548c\u53ef\u89c1\u6027\u8bf7\u53c2\u9605\u4e0b\u65b9\u540c\u7248\u672c\u7684\u7edf\u8ba1\u4fe1\u606f\u6536\u96c6\u4e0e\u89c6\u56fe\u6587\u6863\u3002\u4e0d\u6839\u636e\u5b57\u6bb5\u540d\u79f0\u63a8\u65ad\u5404\u5b57\u6bb5\u7684\u91cd\u7f6e\u89c4\u5219\u3002"]}, {"code": "SELECT replay_lag FROM pg_catalog.pg_stat_replication;", "title": "\u67e5\u770b\u6b64\u5b57\u6bb5", "paragraphs": ["\u793a\u4f8b\u67e5\u8be2\uff1b\u4e0d\u8868\u793a\u5df2\u6267\u884c\uff0c\u4e5f\u4e0d\u63d0\u4f9b\u5b9e\u6d4b\u503c\u3002"]}], "source_only": false, "localization": {"status": "complete", "sources": [{"url": "/docs/devel/monitoring-stats.html", "method": "same-major semantic node", "sha256": "1d9a086fb4c6fdd9a56d3a7a28e8c164354ef0bf50c402f06ebe174538f96a4f", "language": "zh", "matched_nodes": ["#MONITORING-STATS/div[8]/div[3]/div[1]/table[0]/tbody[2]/tr[16]/td[0]/p[1]", "#MONITORING-STATS/div[8]/p[2]"]}], "language": "zh", "original_text": {"/summary": "Time elapsed between flushing recent WAL locally and receiving notification that this standby server has written, flushed and applied it. This can be used to gauge the delay that synchronous_commit level remote_apply incurred while committing if this server was configured as a synchronous standby.", "/versions/20/description/0": "Time elapsed between flushing recent WAL locally and receiving notification that this standby server has written, flushed and applied it. This can be used to gauge the delay that synchronous_commit level remote_apply incurred while committing if this server was configured as a synchronous standby.", "/versions/20/facts/0/label": "View", "/versions/20/facts/1/label": "Field", "/versions/20/facts/2/label": "SQL type", "/versions/20/facts/3/label": "Units named in the field definition", "/versions/20/facts/3/value": "Not specified", "/versions/20/facts/4/label": "Reset observation", "/versions/20/facts/4/value": "No stats_reset field is documented for this view", "/versions/20/related/0/label": "pg_stat_replication columns", "/versions/20/related/1/label": "Statistics collection and reset functions", "/versions/20/sections/0/title": "View semantics", "/versions/20/sections/1/title": "Collection and reset context", "/versions/20/sections/2/title": "Inspect this field", "/versions/20/sections/0/paragraphs/0": "The pg_stat_replication view will contain one row per WAL sender process, showing statistics about replication to that sender's connected standby server. Only directly connected standbys are listed; no information is available about downstream standby servers.", "/versions/20/sections/1/paragraphs/0": "Read the same-version statistics collection and view documentation below for reset scope and visibility. No per-field reset rule is inferred from the field name.", "/versions/20/sections/2/paragraphs/0": "Example query; no execution result or measured value is asserted."}, "fallback_fields": [], "source_language": "en", "original_snapshot_sha256": "75f564f48ad2dcbd19938daf354da70f87e6dec53e73033d393edb8833029b7b", "canonical_center_text_hash": "459030aa4d89dc677bf441610117dc59d7ae3a63aca1b9c29d69566a0dae4350"}, "description_zh": "\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002", "comparison_data": {"view": "pg_stat_replication", "field": "replay_lag", "sql_type": "interval", "units_mentioned": []}, "comparison_hash": "97052561d644196937057eebf96b5d5b3a43e3afacf041e0c1f4ceed6f66ea5e", "manual_language": "zh", "units_mentioned": [], "description_zh_html": "<p>pg_stat_replication.replay_lag \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_replication</code></dd><dt>\u5b57\u6bb5</dt><dd><code>replay_lag</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>interval</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002</p><p><a href=\"/zh/docs/devel/monitoring-stats.html\" rel=\"nofollow\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>", "source_revalidation": {"kind": "static-same-version-source-and-manual-replay", "audit": "wiki-audit-20261023", "runtime_rerun": false, "compared_fields": "documented field type and description, source-only view expressions", "source_revision": "49c73aa4c9cacef8ca979276a28ac416c08e9e54c9baee4ae5fd116a35fa13ac", "previous_source_revision": "4d3346909b201ac1648232cf290462a7070c119326f56196f1f0253ed80fae41"}}}}, "snapshot": {"view": "pg_stat_replication", "facts": [{"label": "\u89c6\u56fe", "value": "pg_stat_replication"}, {"label": "\u5b57\u6bb5", "value": "replay_lag"}, {"label": "SQL \u7c7b\u578b", "value": "interval"}, {"label": "\u5b57\u6bb5\u5b9a\u4e49\u8bb0\u8f7d\u7684\u5355\u4f4d", "value": "\u672a\u6307\u5b9a"}, {"label": "\u91cd\u7f6e\u6761\u4ef6", "value": "\u624b\u518c\u672a\u4e3a\u6b64\u89c6\u56fe\u8bb0\u8f7d stats_reset \u5b57\u6bb5"}], "field": "replay_lag", "tables": [], "related": [{"url": "/wiki/catalog/pg_stat_replication/?v=18", "label": "pg_stat_replication \u5b57\u6bb5"}, {"url": "/docs/18/monitoring-stats.html", "label": "\u7edf\u8ba1\u6536\u96c6\u4e0e\u91cd\u7f6e\u51fd\u6570"}], "release": {"ref": "https://ftp.postgresql.org/pub/source/v18.6/postgresql-18.6.tar.bz2", "label": "18.6", "major": "18", "channel": "stable", "revision": "555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f"}, "sources": [{"url": "/docs/18/monitoring-stats.html#PG-STAT-REPLICATION-VIEW", "path": "monitoring-stats.html", "label": "PostgreSQL 18 English manual", "sha256": "aa979eed08627fbf715a9d792094a162a73671db5af810f3ab2aad3e073d5722"}], "zh_from": {"kind": "same-version-chinese-manual-with-source-derived-structured-summary", "manual": {"url": "/zh/docs/18/monitoring-stats.html#", "anchor": "", "column": "replay_lag", "locale": "zh-Hans", "version": "18", "build_id": 107, "page_key": "monitoring-stats.html", "extraction": "exact-catalog-field", "source_hash": "0274aac7991450316bcf7be44635653b6d896fb00e321242c1b6674cb05c2e53", "source_revision": "unknown:rendered-translation-baseline", "translation_revision": "git:b1b500221dbe5437cfca004d6b04d3f6e422765d;html-sha256:08e987a66af27b98444a8057c256314eafa13611a3fb9e888214fc436824244b"}, "body_sha256": "64acedce1fecb48ac0c2456ed1272022a4e9e346957775c8c6428180e6a95df4", "runtime_rerun": false, "authored_translation": "source-derived-structured-summary", "source_facts_revision": "555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f"}, "facts_zh": [{"label": "\u89c6\u56fe", "value": "pg_stat_replication"}, {"label": "\u5b57\u6bb5", "value": "replay_lag"}, {"label": "SQL \u7c7b\u578b", "value": "interval"}, {"label": "\u5b57\u6bb5\u5b9a\u4e49\u8bb0\u8f7d\u7684\u5355\u4f4d", "value": "\u672a\u6307\u5b9a"}, {"label": "\u91cd\u7f6e\u6761\u4ef6", "value": "\u624b\u518c\u672a\u4e3a\u6b64\u89c6\u56fe\u8bb0\u8f7d stats_reset \u5b57\u6bb5"}], "sections": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["pg_stat_replication \u89c6\u56fe\u4e3a\u6bcf\u4e2a WAL \u53d1\u9001\u8fdb\u7a0b\u5305\u542b\u4e00\u884c\uff0c\u663e\u793a\u6709\u5173\u590d\u5236\u5230\u8be5\u53d1\u9001\u8fdb\u7a0b\u6240\u8fde\u63a5\u5907\u5e93\u7684\u7edf\u8ba1\u4fe1\u606f\u3002\u8fd9\u91cc\u53ea\u5217\u51fa\u76f4\u63a5\u8fde\u63a5\u7684\u5907\u5e93\uff1b\u4e0d\u5305\u542b\u4e0b\u6e38\u5907\u5e93\u7684\u4fe1\u606f\u3002"]}, {"title": "\u91c7\u96c6\u4e0e\u91cd\u7f6e\u8bed\u4e49", "paragraphs": ["\u91cd\u7f6e\u8303\u56f4\u548c\u53ef\u89c1\u6027\u8bf7\u53c2\u9605\u4e0b\u65b9\u540c\u7248\u672c\u7684\u7edf\u8ba1\u4fe1\u606f\u6536\u96c6\u4e0e\u89c6\u56fe\u6587\u6863\u3002\u4e0d\u6839\u636e\u5b57\u6bb5\u540d\u79f0\u63a8\u65ad\u5404\u5b57\u6bb5\u7684\u91cd\u7f6e\u89c4\u5219\u3002"]}, {"code": "SELECT replay_lag FROM pg_catalog.pg_stat_replication;", "title": "\u67e5\u770b\u6b64\u5b57\u6bb5", "paragraphs": ["\u793a\u4f8b\u67e5\u8be2\uff1b\u4e0d\u8868\u793a\u5df2\u6267\u884c\uff0c\u4e5f\u4e0d\u63d0\u4f9b\u5b9e\u6d4b\u503c\u3002"]}], "sql_type": "interval", "center_zh": {"title": "pg_stat_replication.replay_lag", "locale": "zh-Hans", "source": {"key": "pg_stat_replication-replay_lag", "locale": "zh-Hans", "version": "18", "text_hash": "3e67a1a452275ae95f8d0ae80265ce7e843a4c5e23f1c019dc28af5b041d8a04", "collection": "metric", "dataset_hash": "7c31b524dfe136022d39a6ae8dcfac6b3bbd5f8fdaf422536599981252aff0c9", "source_database": "center", "source_revision": "555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f"}, "payload": {"facts": [{"label": "\u89c6\u56fe", "value": "pg_stat_replication"}, {"label": "\u5b57\u6bb5", "value": "replay_lag"}, {"label": "SQL \u7c7b\u578b", "value": "interval"}, {"label": "\u5b57\u6bb5\u5b9a\u4e49\u8bb0\u8f7d\u7684\u5355\u4f4d", "value": "\u672a\u6307\u5b9a"}, {"label": "\u91cd\u7f6e\u6761\u4ef6", "value": "\u624b\u518c\u672a\u4e3a\u6b64\u89c6\u56fe\u8bb0\u8f7d stats_reset \u5b57\u6bb5"}], "tables": [], "zh_from": {"kind": "same-version-chinese-manual-with-source-derived-structured-summary", "manual": {"url": "/zh/docs/18/monitoring-stats.html#", "anchor": "", "column": "replay_lag", "locale": "zh-Hans", "version": "18", "build_id": 107, "page_key": "monitoring-stats.html", "extraction": "exact-catalog-field", "source_hash": "0274aac7991450316bcf7be44635653b6d896fb00e321242c1b6674cb05c2e53", "source_revision": "unknown:rendered-translation-baseline", "translation_revision": "git:b1b500221dbe5437cfca004d6b04d3f6e422765d;html-sha256:08e987a66af27b98444a8057c256314eafa13611a3fb9e888214fc436824244b"}, "body_sha256": "64acedce1fecb48ac0c2456ed1272022a4e9e346957775c8c6428180e6a95df4", "runtime_rerun": false, "authored_translation": "source-derived-structured-summary", "source_facts_revision": "555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f"}, "sections": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["pg_stat_replication \u89c6\u56fe\u4e3a\u6bcf\u4e2a WAL \u53d1\u9001\u8fdb\u7a0b\u5305\u542b\u4e00\u884c\uff0c\u663e\u793a\u6709\u5173\u590d\u5236\u5230\u8be5\u53d1\u9001\u8fdb\u7a0b\u6240\u8fde\u63a5\u5907\u5e93\u7684\u7edf\u8ba1\u4fe1\u606f\u3002\u8fd9\u91cc\u53ea\u5217\u51fa\u76f4\u63a5\u8fde\u63a5\u7684\u5907\u5e93\uff1b\u4e0d\u5305\u542b\u4e0b\u6e38\u5907\u5e93\u7684\u4fe1\u606f\u3002"]}, {"title": "\u91c7\u96c6\u4e0e\u91cd\u7f6e\u8bed\u4e49", "paragraphs": ["\u91cd\u7f6e\u8303\u56f4\u548c\u53ef\u89c1\u6027\u8bf7\u53c2\u9605\u4e0b\u65b9\u540c\u7248\u672c\u7684\u7edf\u8ba1\u4fe1\u606f\u6536\u96c6\u4e0e\u89c6\u56fe\u6587\u6863\u3002\u4e0d\u6839\u636e\u5b57\u6bb5\u540d\u79f0\u63a8\u65ad\u5404\u5b57\u6bb5\u7684\u91cd\u7f6e\u89c4\u5219\u3002"]}, {"code": "SELECT replay_lag FROM pg_catalog.pg_stat_replication;", "title": "\u67e5\u770b\u6b64\u5b57\u6bb5", "paragraphs": ["\u793a\u4f8b\u67e5\u8be2\uff1b\u4e0d\u8868\u793a\u5df2\u6267\u884c\uff0c\u4e5f\u4e0d\u63d0\u4f9b\u5b9e\u6d4b\u503c\u3002"]}], "description_zh": "\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002", "description_zh_html": "<p>pg_stat_replication.replay_lag \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_replication</code></dd><dt>\u5b57\u6bb5</dt><dd><code>replay_lag</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>interval</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002</p><p><a href=\"/zh/docs/18/monitoring-stats.html#\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>"}, "summary": "\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002", "version": "18", "link_map": {"/zh/docs/18/monitoring-stats.html": "/docs/18/monitoring-stats.html"}, "body_html": "<p>pg_stat_replication.replay_lag \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_replication</code></dd><dt>\u5b57\u6bb5</dt><dd><code>replay_lag</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>interval</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002</p><p><a href=\"/zh/docs/18/monitoring-stats.html\" rel=\"nofollow\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>", "body_sha256": "ec935cafcbda78ba94450e4f26e0007bda314a6ec025ad47a5c51bc5cb694a5b", "content_hash": "3e67a1a452275ae95f8d0ae80265ce7e843a4c5e23f1c019dc28af5b041d8a04", "source_database": "center", "source_revision": "555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f"}, "signature": "SELECT replay_lag FROM pg_catalog.pg_stat_replication;", "tables_zh": [], "documented": true, "description": ["\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002"], "manual_html": "", "manual_path": "/docs/18/monitoring-stats.html", "sections_zh": [{"title": "\u89c6\u56fe\u8bed\u4e49", "paragraphs": ["pg_stat_replication \u89c6\u56fe\u4e3a\u6bcf\u4e2a WAL \u53d1\u9001\u8fdb\u7a0b\u5305\u542b\u4e00\u884c\uff0c\u663e\u793a\u6709\u5173\u590d\u5236\u5230\u8be5\u53d1\u9001\u8fdb\u7a0b\u6240\u8fde\u63a5\u5907\u5e93\u7684\u7edf\u8ba1\u4fe1\u606f\u3002\u8fd9\u91cc\u53ea\u5217\u51fa\u76f4\u63a5\u8fde\u63a5\u7684\u5907\u5e93\uff1b\u4e0d\u5305\u542b\u4e0b\u6e38\u5907\u5e93\u7684\u4fe1\u606f\u3002"]}, {"title": 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"original_text": {"/versions/18/description/0": "Time elapsed between flushing recent WAL locally and receiving notification that this standby server has written, flushed and applied it. This can be used to gauge the delay that synchronous_commit level remote_apply incurred while committing if this server was configured as a synchronous standby.", "/versions/18/facts/0/label": "View", "/versions/18/facts/1/label": "Field", "/versions/18/facts/2/label": "SQL type", "/versions/18/facts/3/label": "Units named in the field definition", "/versions/18/facts/3/value": "Not specified", "/versions/18/facts/4/label": "Reset observation", "/versions/18/facts/4/value": "No stats_reset field is documented for this view", "/versions/18/related/0/label": "pg_stat_replication columns", "/versions/18/related/1/label": "Statistics collection and reset functions", "/versions/18/sections/0/title": "View semantics", "/versions/18/sections/1/title": "Collection and reset context", "/versions/18/sections/2/title": "Inspect this field", "/versions/18/sections/0/paragraphs/0": "The pg_stat_replication view will contain one row per WAL sender process, showing statistics about replication to that sender's connected standby server. Only directly connected standbys are listed; no information is available about downstream standby servers.", "/versions/18/sections/1/paragraphs/0": "Read the same-version statistics collection and view documentation below for reset scope and visibility. No per-field reset rule is inferred from the field name.", "/versions/18/sections/2/paragraphs/0": "Example query; no execution result or measured value is asserted."}, "fallback_fields": [], "source_language": "en", "original_snapshot_sha256": "a28f289f7bec85a71d41d698fd4624abcb1b511578895368df61c8f60e222852", "canonical_center_text_hash": "3e67a1a452275ae95f8d0ae80265ce7e843a4c5e23f1c019dc28af5b041d8a04"}, "description_zh": "\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002", "comparison_data": {"view": "pg_stat_replication", "field": "replay_lag", "sql_type": "interval", "units_mentioned": []}, "comparison_hash": "97052561d644196937057eebf96b5d5b3a43e3afacf041e0c1f4ceed6f66ea5e", "manual_language": "zh", "units_mentioned": [], "description_zh_html": "<p>pg_stat_replication.replay_lag \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_replication</code></dd><dt>\u5b57\u6bb5</dt><dd><code>replay_lag</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>interval</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002</p><p><a href=\"/zh/docs/18/monitoring-stats.html\" rel=\"nofollow\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>", "center_zh_rendered": "<p>pg_stat_replication.replay_lag \u7edf\u8ba1\u5b57\u6bb5\u3002</p><dl><dt>\u89c6\u56fe</dt><dd><code>pg_stat_replication</code></dd><dt>\u5b57\u6bb5</dt><dd><code>replay_lag</code></dd><dt>SQL \u7c7b\u578b</dt><dd><code>interval</code></dd></dl><h3>\u540c\u7248\u672c\u4e2d\u6587\u624b\u518c\u5b9a\u4e49</h3><p>\u4ece\u5728\u672c\u5730\u5c06\u6700\u8fd1\u7684 WAL \u5237\u76d8\uff0c\u5230\u6536\u5230\u8be5\u5907\u5e93\u5df2\u5199\u5165\u8be5 WAL\u3001\u5c06\u5176\u5237\u76d8\u5e76\u5e94\u7528\u7684\u901a\u77e5\u4e4b\u95f4\u7ecf\u8fc7\u7684\u65f6\u95f4\u3002\u5982\u679c\u8be5\u670d\u52a1\u5668\u88ab\u914d\u7f6e\u4e3a\u540c\u6b65\u5907\u5e93\uff0c\u53ef\u7528\u6b64\u503c\u8861\u91cf\u5728\u63d0\u4ea4\u65f6 synchronous_commit \u7ea7\u522b remote_apply \u6240\u5bfc\u81f4\u7684\u5ef6\u8fdf\u3002</p><p><a href=\"/docs/18/monitoring-stats.html\">\u67e5\u770b\u5b8c\u6574\u4e2d\u6587\u624b\u518c\u4e0e\u4e0a\u4e0b\u6587</a>\u3002</p>"}, "comparison": {"left": "17", "right": "18", "status": "unchanged", "diff": ""}}