PostgreSQL LISTEN/NOTIFY Alerts Without Log Noise

Balancing LISTEN/NOTIFY alerts with log_min_messages to avoid noise

0 reputation · 20 Apr 2022, 21:38 UTC

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Goal: Use PostgreSQL LISTEN/NOTIFY to deliver custom alerts without increasing log noise.

Constraint: The global log_min_messages setting must filter out routine messages while still capturing genuine errors, and the client must reliably process NOTIFY messages despite possible offline periods.

Questions: How can log_min_messages be tuned per‑severity to preserve critical logs yet suppress non‑essential NOTIFY chatter? Which client‑side strategies ensure missed notifications are not lost after reconnection? Can a combination of pgAgent NOTIFY triggers and a persistent subscription guarantee delivery without log pollution?

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Balancing LISTEN/NOTIFY alerts with log_min_messages to avoid noise

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