Monitoring checklist

Monitoring checklist (dashboard 1):TPS and (optional but also desired) QPSLatency (query duration) — at least average. Better: histogram, percentilesConnections (sessions) — stacked graph of session counts by state (first of all: active and idle-in-transaction; also interesting: idle, others) and how far the sum is from max_connection (+pool size for PgBouncer).Longest transactions (max transaction age or top-n transactions by age), excluding autovacuum activityCommits vs rollbacks — how many transactions are rolled backTransactions left till transaction ID wraparoundReplication lags / bytes in replication slot / unused replication slotsCount of WALs waiting to be archived (archiving lag)WAL generation ratesLocks and deadlocksBasic query analysis graph (top-n by total_time or by mean_time?)Basic wait event analysis (a.k.a. “active session analysis” or “performance insights”)And links to a few things we mentioned: Postgres monitoring review checklist (community document) pgstats.devImproving Postgres Connection Scalability: Snapshots (blog post by Andres Freund) Transaction ID Wraparound in Postgres (blog post by David Cramer) Subtransactions Considered Harmful (blog post by Nikolay)datadoghq.com  pgwatch2 (Postgres.ai Edition) ------------------------What did you like or not like? What should we discuss next time? Let us know by tweeting us on @samokhvalov and @michristofidesIf you would like to share this episode, here's a good link (and thank you!)Postgres FM is brought to you by:Nikolay Samokhvalov, founder of Postgres.aiMichael Christofides, founder of pgMustardWith special thanks to:Jessie Draws for the elephant artwork