Data Monitoring
PostgreSQL: Temporary file growth
Large analytical queries spill substantial work to temporary files. Compare temp byte deltas, query evidence and concurrency for the incident window.
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Data Monitoring
PostgreSQL: Cache hit ratio context
A high cache hit ratio accompanies slow queries. Compare the ratio with query latency, physical I/O and workload type.
Read article : PostgreSQL: Cache hit ratio contextData Monitoring
PostgreSQL: Connection saturation
The server nears its connection limit while only a few queries are active. Count connections by application and state and compare pool configuration.
Read article : PostgreSQL: Connection saturationData Monitoring
PostgreSQL: Index usage interpretation
An index shows few scans and is proposed for removal. Check observation duration, statistics reset time and constraints or rare business workflows using the index.
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PostgreSQL: Analyze versus execute safety
An operator wants an execution plan for a potentially expensive statement. Distinguish EXPLAIN estimates from EXPLAIN ANALYZE execution and inspect the statement's side effects.
Read article : PostgreSQL: Analyze versus execute safetyData Monitoring
PostgreSQL: Archive pipeline failures
Backups exist but WAL archival has stopped advancing. Inspect pg_stat_archiver and the configured archive destination alongside recent WAL production.
Read article : PostgreSQL: Archive pipeline failuresData Monitoring
PostgreSQL: Statistics snapshot interpretation
Repeated statistics reads inside one transaction appear unchanged. Check PostgreSQL statistics snapshot behavior and the collector's transaction scope.
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PostgreSQL: PostgreSQL recovery drill evidence
A replicated standby is mistaken for a complete backup strategy. Compare independent backups, archived WAL and an isolated restore test with the recovery objective.
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