How do you monitor and manage PostgreSQL replication slot lag?

website oldest replication slot lag Each read replica has its own physical slot on the source DB instance The slot keeps track of the oldest WAL that might be oldest replication slot lag A newly created standby is not a valid failover-promotion candidate for a logical replication primary until an initial period where slots exist

oldest replication slot lag Fixing PostgreSQL database replication errors · Removing an inactive replication slot · Message: WARNING: oldest xmin is far in the past and pg_wal size growing   No default levels are set Upper levels are configurable for the replica lag age and oldest replication slot lag size via the rule AWSRDS Replica lag Item   Oldest Replication Slot Lag For PostgreSQL: the lagging size of the replica lagging the most in terms of write-ahead log data received ReadIOPS Read

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