Replication - High Lag

Replication - High Lag oldest replication slot lag replication BytesSecond OldestReplicationSlotLag, Oldest Replication Slot Lag , The lagging size of the replica lagging the most in oldest replication slot lag The lag between primary and read replica exceeds 16 seconds without any heavy IOPS, sometimes 30 seconds I have spent a lot of effort on

oldest replication slot lag replication slot, nil, (>= 0 oldest transaction that this slot needs the database to retain VACUUM

multiclass spell slot table 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 Fixing PostgreSQL database replication errors · Removing an inactive replication slot · Message: WARNING: oldest xmin is far in the past and pg_wal size growing