Technologies/PostgreSQL/flush_lag
PostgreSQLPostgreSQLMetric

flush_lag

Replication flush lag
Dimensions:None
Available on:Native (1)DatadogDatadog (1)
Interface Metrics (2)
Native
flush_lag statistic from pg_stat_replication
Dimensions:None
DatadogDatadog
Time elapsed between flushing recent WAL locally and receiving notification that this standby server has written and flushed it (but not yet applied it). This can be used to gauge the delay that synchronous_commit level on incurred while committing if this server was configured as a synchronous standby. Only available with postgresql 10 and newer.
Dimensions:None
Sources
flush_laggithub.com
postgresql.replication.wal_flush_laggithub.com

Technical Annotations (3)

Technical References (3)
WALcomponentpostgres_exportercomponentpgwatchcomponent
Related Insights (1)
Replication lag causes replica data staleness and read inconsistencieswarning
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