"jsonlog" logging format

Recorded source states and original language descriptions. Missing version evidence stays unknown.

The source snapshot records transitions for PostgreSQL 8.1–18. The historical matrix records independent cells for 7.4–18. Neither records support for PostgreSQL 19 or 20; newer versions remain unknown. These source claims are distinct from runtime measurements.

Backend

Description

PostgreSQL logs can now be output in JSON using the jsonlog parameter when setting log_destination. This provides a "structured log" that can be used by other utilities for storage and analysis.

Selected version: PostgreSQL 18

Yes

20	19	18	17	16	15	14	13	12	11	10	9.6	9.5	9.4	9.3	9.2	9.1	9.0	8.4	8.3	8.2	8.1	8.0	7.4
Unknown	Unknown	Yes	Yes	Yes	Yes	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	No	Unknown	Unknown

Compare versions

Original documentation links

Recorded legacy identifiers: 383

Complete source facts and provenance

yaml · center · 1dd22bf9a7f3ec325b894e2836fda535a25529f246a94dd41d6abbfe9997f7fd

{
  "Key": "jsonlog-logging-format",
  "SourceKind": "yaml",
  "SourceDatabase": "center",
  "SourceTable": "featurematrix.yaml",
  "SourceKey": "\"jsonlog\" logging format",
  "SourceHash": "1dd22bf9a7f3ec325b894e2836fda535a25529f246a94dd41d6abbfe9997f7fd",
  "Name": "\"jsonlog\" logging format",
  "NameLocale": "en",
  "GroupKey": "backend",
  "GroupName": "Backend",
  "GroupLocale": "en",
  "Ordinal": 9,
  "GroupOrder": 0,
  "Facts": {
    "feature": {
      "description": "PostgreSQL logs can now be output in  [JSON](https://www.postgresql.org/docs/15/runtime-config-logging.html#RUNTIME-CONFIG-LOGGING-JSONLOG) using the [`jsonlog`](https://www.postgresql.org/docs/15/runtime-config-logging.html#RUNTIME-CONFIG-LOGGING-JSONLOG) parameter when setting [`log_destination`](https://www.postgresql.org/docs/15/runtime-config-logging.html#RUNTIME-CONFIG-LOGGING-WHERE). This provides a \"structured log\" that can be used by other utilities for storage and analysis.",
      "name": "\"jsonlog\" logging format",
      "versions": {
        "15": "Yes"
      }
    },
    "group": "Backend",
    "versions": {
      "max": 18,
      "min": 8.1
    }
  },
  "Cells": [
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      "State": "no",
      "EvidenceKind": "yaml-default-no",
      "TransitionVersion": "",
      "Supported": false,
      "Original": "No"
    },
    {
      "Version": "11",
      "State": "no",
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      "TransitionVersion": "",
      "Supported": false,
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    {
      "Version": "12",
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      "TransitionVersion": "",
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      "Supported": false,
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    {
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      "TransitionVersion": "",
      "Supported": false,
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    },
    {
      "Version": "15",
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      "EvidenceKind": "yaml-transition",
      "TransitionVersion": "15",
      "Supported": true,
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    },
    {
      "Version": "16",
      "State": "yes",
      "EvidenceKind": "yaml-transition",
      "TransitionVersion": "15",
      "Supported": true,
      "Original": "Yes"
    },
    {
      "Version": "17",
      "State": "yes",
      "EvidenceKind": "yaml-transition",
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      "Supported": true,
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    },
    {
      "Version": "18",
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      "Supported": true,
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    },
    {
      "Version": "8.1",
      "State": "no",
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      "Supported": false,
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    },
    {
      "Version": "8.2",
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      "EvidenceKind": "yaml-default-no",
      "TransitionVersion": "",
      "Supported": false,
      "Original": "No"
    },
    {
      "Version": "8.3",
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      "TransitionVersion": "",
      "Supported": false,
      "Original": "No"
    },
    {
      "Version": "8.4",
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      "TransitionVersion": "",
      "Supported": false,
      "Original": "No"
    },
    {
      "Version": "9.0",
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      "EvidenceKind": "yaml-default-no",
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    {
      "Version": "9.2",
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      "TransitionVersion": "",
      "Supported": false,
      "Original": "No"
    },
    {
      "Version": "9.3",
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      "EvidenceKind": "yaml-default-no",
      "TransitionVersion": "",
      "Supported": false,
      "Original": "No"
    },
    {
      "Version": "9.4",
      "State": "no",
      "EvidenceKind": "yaml-default-no",
      "TransitionVersion": "",
      "Supported": false,
      "Original": "No"
    },
    {
      "Version": "9.5",
      "State": "no",
      "EvidenceKind": "yaml-default-no",
      "TransitionVersion": "",
      "Supported": false,
      "Original": "No"
    },
    {
      "Version": "9.6",
      "State": "no",
      "EvidenceKind": "yaml-default-no",
      "TransitionVersion": "",
      "Supported": false,
      "Original": "No"
    }
  ],
  "Texts": [
    {
      "Locale": "en",
      "Title": "\"jsonlog\" logging format",
      "BodyHTML": "\u003cp\u003ePostgreSQL logs can now be output in  \u003ca href=\"https://www.postgresql.org/docs/15/runtime-config-logging.html#RUNTIME-CONFIG-LOGGING-JSONLOG\" rel=\"nofollow\"\u003eJSON\u003c/a\u003e using the \u003ca href=\"https://www.postgresql.org/docs/15/runtime-config-logging.html#RUNTIME-CONFIG-LOGGING-JSONLOG\" rel=\"nofollow\"\u003e\u003ccode\u003ejsonlog\u003c/code\u003e\u003c/a\u003e parameter when setting \u003ca href=\"https://www.postgresql.org/docs/15/runtime-config-logging.html#RUNTIME-CONFIG-LOGGING-WHERE\" rel=\"nofollow\"\u003e\u003ccode\u003elog_destination\u003c/code\u003e\u003c/a\u003e. This provides a \u0026#34;structured log\u0026#34; that can be used by other utilities for storage and analysis.\u003c/p\u003e\n",
      "SourceHash": "1dd22bf9a7f3ec325b894e2836fda535a25529f246a94dd41d6abbfe9997f7fd",
      "ContentHash": "7e4354aa1e8c4b1c001a750e63145a12dd157a2d8987fafa948b06530bf619bc",
      "Payload": {
        "description": "PostgreSQL logs can now be output in  [JSON](https://www.postgresql.org/docs/15/runtime-config-logging.html#RUNTIME-CONFIG-LOGGING-JSONLOG) using the [`jsonlog`](https://www.postgresql.org/docs/15/runtime-config-logging.html#RUNTIME-CONFIG-LOGGING-JSONLOG) parameter when setting [`log_destination`](https://www.postgresql.org/docs/15/runtime-config-logging.html#RUNTIME-CONFIG-LOGGING-WHERE). This provides a \"structured log\" that can be used by other utilities for storage and analysis.",
        "name": "\"jsonlog\" logging format",
        "versions": {
          "15": "Yes"
        }
      }
    },
    {
      "Locale": "zh-Hans",
      "Title": "`jsonlog` 日志格式",
      "BodyHTML": "\u003cp\u003ePostgreSQL 日志现在可以通过 \u003ccode\u003ejsonlog\u003c/code\u003e 以 JSON 格式输出，便于结构化存储和分析。\u003c/p\u003e\n",
      "SourceHash": "071091951021357a5f492adb04caed6febf4d315ac2626ca027a48dd8ec01d50",
      "ContentHash": "7d92f3de9d76a8ee628ef23cd4caf77ec8d37e62c3d8dc2972d260f71c4c05a7",
      "Payload": {
        "description": "PostgreSQL 日志现在可以通过 `jsonlog` 以 JSON 格式输出，便于结构化存储和分析。",
        "name": "`jsonlog` 日志格式"
      }
    }
  ],
  "GroupTitles": {
    "en": "Backend",
    "zh-Hans": "后端"
  },
  "LegacyIDs": [
    "383"
  ]
}

Complete source data JSON