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"\u4ece\u670d\u52a1\u6587\u4ef6\u4e2d\u83b7\u53d6\u7684\u8fde\u63a5\u53c2\u6570\u4f1a\u4e0e\u5176\u4ed6\u6765\u6e90\u7684\u53c2\u6570\u5408\u5e76\u3002\u670d\u52a1\u6587\u4ef6\u4e2d\u7684\u8bbe\u7f6e\u4f1a\u8986\u76d6\u76f8\u5e94\u7684\u73af\u5883\u53d8\u91cf\uff0c\u800c\u8fde\u63a5\u5b57\u7b26\u4e32\u4e2d\u76f4\u63a5\u7ed9\u51fa\u7684\u503c\u53c8\u4f1a\u8986\u76d6\u670d\u52a1\u6587\u4ef6\u4e2d\u7684\u8bbe\u7f6e\u3002\u4f8b\u5982\uff0c\u4f7f\u7528\u4e0a\u8ff0\u670d\u52a1\u6587\u4ef6\u65f6\uff0c\u8fde\u63a5\u5b57\u7b26\u4e32 service=mydb port=5434 \u5c06\u4f7f\u7528\u4e3b\u673a somehost \u3001\u7aef\u53e3 5434 \u3001\u7528\u6237 admin \uff0c\u4ee5\u53ca\u7531\u73af\u5883\u53d8\u91cf\u6216\u5185\u7f6e\u9ed8\u8ba4\u503c\u8bbe\u7f6e\u7684\u5176\u4ed6\u53c2\u6570\u3002"]}, {"title": "\u73af\u5883\u53d8\u91cf\u8bc1\u636e", "paragraphs": []}], "signature": "keepalives_interval", "documented": true, "description": ["\u63a7\u5236 TCP 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Unix \u57df\u5957\u63a5\u5b57\u8fde\u63a5\u6216\u7981\u7528\u4fdd\u6d3b\u65f6\uff0c\u6b64\u53c2\u6570\u88ab\u5ffd\u7565\u3002\u4ec5\u5728\u63d0\u4f9b TCP_KEEPINTVL \u6216\u7b49\u4ef7\u5957\u63a5\u5b57\u9009\u9879\u7684\u7cfb\u7edf\u4ee5\u53ca Windows \u4e0a\u652f\u6301\uff1b\u5176\u4ed6\u7cfb\u7edf\u4e2d\u65e0\u6548\u3002</p>\n</dd></dl></div>", "manual_path": "libpq-connect.html#LIBPQ-KEEPALIVES-INTERVAL", "localization": {"status": "complete", "sources": [{"url": "/docs/14/libpq-envars.html", "method": "same-major semantic node", "sha256": "7730429c9ed41dfd04210ac6c4c11ecb7dae5cd8ef5e7f5224e53a02eb8e7219", "language": "zh", "matched_nodes": ["#LIBPQ-ENVARS/p[2]"]}, {"url": "/docs/14/libpq-pgservice.html", "method": "same-major semantic node", "sha256": "ca623924f7c1365661a6549a08305bb467cd63207e63c2fff50f51124d070ace", "language": "zh", "matched_nodes": ["#LIBPQ-PGSERVICE/p[5]", "#LIBPQ-PGSERVICE/p[9]"]}], "language": "zh", "original_text": {"/versions/14/description/0": "Controls the number of seconds after which a TCP keepalive message that is not acknowledged by the server should be retransmitted. A value of zero uses the system default. This parameter is ignored for connections made via a Unix-domain socket, or if keepalives are disabled. It is only supported on systems where TCP_KEEPINTVL or an equivalent socket option is available, and on Windows; on other systems, it has no effect.", "/versions/14/facts/0/label": "Client library", "/versions/14/facts/1/label": "Manual definition", "/versions/14/facts/1/value": "Documented", "/versions/14/facts/2/label": "Source environment fallback", "/versions/14/facts/2/value": "None declared in the option table", "/versions/14/facts/3/label": "Compiled fallback expression", "/versions/14/related/0/label": "Connection service file", "/versions/14/related/1/label": "Password file", "/versions/14/related/2/label": "All libpq environment variables", "/versions/14/sections/0/title": "Default resolution and service-file precedence", "/versions/14/sections/1/title": "Environment variable evidence", "/versions/14/sections/0/paragraphs/0": "The following environment variables can be used to select default connection parameter values, which will be used by PQconnectdb , PQsetdbLogin and PQsetdb if no value is directly specified by the calling code. 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Another directory, but not a different file name, can be specified by setting the environment variable PGSYSCONFDIR .", "/versions/14/sections/0/paragraphs/2": "Connection parameters obtained from a service file are combined with parameters obtained from other sources. A service file setting overrides the corresponding environment variable, and in turn can be overridden by a value given directly in the connection string. For example, using the above service file, a connection string service=mydb port=5434 will use host somehost , port 5434 , user admin , and other parameters as set by environment variables or built-in defaults."}, "fallback_fields": [], "source_language": "en", "original_snapshot_sha256": "46ea3251a44109c879596175c84104e1bc17abdc065fdf057ea16449fbc8d522"}, "source_option": {"keyword": "keepalives_interval", "declaration": "\"keepalives_interval\", NULL, NULL, NULL, \"TCP-Keepalives-Interval\", \"\", 10, offsetof(struct pg_conn, keepalives_interval)", "environment": "", "source_notes": [], "compiled_default_expression": "NULL"}, "comparison_data": {"keyword": "keepalives_interval", "definition": "Controls the number of seconds after which a TCP keepalive message that is not acknowledged by the server should be retransmitted. A value of zero uses the system default. This parameter is ignored for connections made via a Unix-domain socket, or if keepalives are disabled. 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libpq-envars.html", "anchor": "", "sha256": "48fb76414267a67473ccb901e64320de2e73fb0dc8ade8fcea38edf3628d2c21", "language": "en", "original_url": "/docs/17/libpq-envars.html"}, {"url": "https://pg.center/docs/17/libpq-pgservice.html", "file": "libpq-pgservice.html", "label": "17.11 English manual \u00b7 libpq-pgservice.html", "anchor": "", "sha256": "1447c3836f348d6d0ea59ab68fe17ef604eb913938eed81c1e2cb081a36e2d8d", "language": "en", "original_url": "/docs/17/libpq-pgservice.html"}], "sections": [{"title": "\u9ed8\u8ba4\u503c\u89e3\u6790\u4e0e\u670d\u52a1\u6587\u4ef6\u4f18\u5148\u7ea7", "paragraphs": ["\u4ee5\u4e0b\u73af\u5883\u53d8\u91cf\u53ef\u7528\u4e8e\u9009\u62e9\u8fde\u63a5\u53c2\u6570\u7684\u9ed8\u8ba4\u503c\uff0c\u4f9b PQconnectdb \u3001 PQsetdbLogin \u548c PQsetdb 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Unix \u57df\u5957\u63a5\u5b57\u8fde\u63a5\u6216\u7981\u7528\u4fdd\u6d3b\u65f6\uff0c\u6b64\u53c2\u6570\u88ab\u5ffd\u7565\u3002\u4ec5\u5728\u63d0\u4f9b TCP_KEEPINTVL \u6216\u7b49\u4ef7\u5957\u63a5\u5b57\u9009\u9879\u7684\u7cfb\u7edf\u4ee5\u53ca Windows \u4e0a\u652f\u6301\uff1b\u5176\u4ed6\u7cfb\u7edf\u4e2d\u65e0\u6548\u3002</p>\n</dd></dl></div>", "manual_path": "libpq-connect.html#LIBPQ-KEEPALIVES-INTERVAL", "localization": {"status": "complete", "sources": [{"url": "/docs/17/libpq-envars.html", "method": "same-major semantic node", "sha256": "5f1014f4afd40210bc05e52c10a62fe34fcaf5cc4445cb809ec8cdacb003cf1c", "language": "zh", "matched_nodes": ["#LIBPQ-ENVARS/p[2]"]}, {"url": "/docs/17/libpq-pgservice.html", "method": "same-major semantic node", "sha256": "0544512734d86673b69ac05be91d417df85476fe6048c6d4b197c65a7d566bbe", "language": "zh", "matched_nodes": ["#LIBPQ-PGSERVICE/p[5]", "#LIBPQ-PGSERVICE/p[9]"]}], "language": "zh", "original_text": {"/versions/17/description/0": "Controls 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\u5728\u8c03\u7528\u4ee3\u7801\u672a\u76f4\u63a5\u6307\u5b9a\u53c2\u6570\u503c\u65f6\u4f7f\u7528\u3002\u4f8b\u5982\uff0c\u8fd9\u6837\u53ef\u4ee5\u907f\u514d\u5728\u7b80\u5355\u7684\u5ba2\u6237\u7aef\u5e94\u7528\u7a0b\u5e8f\u4e2d\u786c\u7f16\u7801\u6570\u636e\u5e93\u8fde\u63a5\u4fe1\u606f\u3002", "\u670d\u52a1\u540d\u79f0\u53ef\u4ee5\u5728\u6bcf\u4e2a\u7528\u6237\u7684\u670d\u52a1\u6587\u4ef6\u6216\u7cfb\u7edf\u8303\u56f4\u7684\u6587\u4ef6\u4e2d\u5b9a\u4e49\u3002\u5982\u679c\u540c\u4e00\u4e2a\u670d\u52a1\u540d\u79f0\u5b58\u5728\u4e8e\u7528\u6237\u6587\u4ef6\u548c\u7cfb\u7edf\u6587\u4ef6\u4e2d\uff0c\u5219\u7528\u6237\u6587\u4ef6\u4f18\u5148\u3002\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c\u6bcf\u4e2a\u7528\u6237\u7684\u670d\u52a1\u6587\u4ef6\u540d\u4e3a ~/.pg_service.conf \u3002\u5728Microsoft Windows\u4e0a\uff0c\u5b83\u7684\u540d\u79f0\u4e3a %APPDATA%\\postgresql\\.pg_service.conf \uff08\u5176\u4e2d %APPDATA% 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the number of seconds after which a TCP keepalive message that is not acknowledged by the server should be retransmitted. 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For example, using the above service file, a connection string service=mydb port=5434 will use host somehost , port 5434 , user admin , and other parameters as set by environment variables or built-in defaults."]}, "comparison": {"left": "17", "right": "18", "status": "unchanged", "diff": ""}}