Dev Tools · 2h ago
Postgres Replication Monitoring: Build a HA Dashboard to Catch Silent Failures
The article explains how to monitor PostgreSQL streaming replication using pg_stat_replication, pg_stat_wal_receiver, and pg_replication_slots. It details key metrics like sent_lsn, write_lsn, flush_lsn, and replay_lsn to detect replica disconnects or replay stalls. The goal is to alert operators before a silent replica failure turns into a single-node outage.
Meridian48 take
While the guide is technically solid, it assumes readers already manage Postgres replication; for most teams, a managed database service would handle this monitoring automatically.
postgresqlreplication-monitoring