{"Entry":{"collection":"metric","key":"pg_stat_replication-replay_lag","name":"pg_stat_replication.replay_lag","aliases":["replay_lag","pg_stat_replication"],"metadata":{"aliases":["replay_lag","pg_stat_replication"],"category":"pg_stat_replication","content_hash":"848d8b7fd73909caa2d79bac152823cb0e68727c4aed6a402c45f74ec1ecd267","derived_content_hash":"19c813e2d1ce34e7b26f949592fa30e516612464362160433d54b60a1909396d","imported_at":"2026-09-30T00:40:46.080482+08:00","name":"pg_stat_replication.replay_lag","name_zh":"","slug":"pg_stat_replication-replay_lag","summary":"Time elapsed between flushing recent WAL locally and receiving notification that this standby server has written, flushed and applied it. 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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."],"manual_html":"","related":[{"label":"pg_stat_replication columns","url":"/wiki/catalog/pg_stat_replication/?v=18"},{"label":"Statistics collection and reset functions","url":"/docs/18/monitoring-stats.html"}],"sections":[{"paragraphs":["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."],"title":"View semantics"},{"paragraphs":["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."],"title":"Collection and reset context"},{"code":"SELECT replay_lag FROM pg_catalog.pg_stat_replication;","paragraphs":["Example query; no execution result or measured value is asserted."],"title":"Inspect this field"}],"tables":[]}},"RequestedLocale":"en","Fallback":false,"Versions":["10","11","12","13","14","15","16","17","18","19","20"],"Locales":["en","zh-Hans"],"Signatures":null,"Spellings":null,"SQLState":null,"Evidence":null}