ENGINE BAŞINA
Her motorun kendine özel metrikleri
Postgres'in autovacuum davranışı, Mongo'nun oplog gecikmesi, Redis'in keyspace hit rate'i — her engine için DBA'in beklediği metrikler.
POSTGRESQL — ÖRNEK METRIK SETI
pg_stat_replication
lag_bytes, replay_lsn, write_lag
pg_stat_activity
active connections, longest tx
pg_stat_bgwriter
buffers_clean, checkpoint_sync_time
autovacuum
running, last vacuum, dead tuples
pg_locks
blocked queries, lock waits
WAL
wal_records, wal_bytes, archiver