Logical replication and physical standby failover

website oldest replication slot lag replication consumer is offline A logical replication slot works by keeping track of the oldest address in the oldest write-ahead log 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

oldest replication slot lag Oldest xmin Age, oldest_backend_xmin_age, Count, Age in units of the Maximum lag across all asynchronous physical replication slots   High replica_lag means that the replica can't apply replication changes fast enough The total lag can be observed via replica_byte_lag metric, which has labels  In Postgres , replication slots were introduced A process receiving changes via streaming replication can create a replication slot on the

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