what's the promised value for PostgreSQL replication lag?

what's the promised value for PostgreSQL replication lag? 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 oldest slot machine 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 slot machine Fixing PostgreSQL database replication errors · Removing an inactive replication slot · Message: WARNING: oldest xmin is far in the past and pg_wal size growing

black dragon slot What is restart_lsn? This is the start LSN of the oldest transaction which is not replicated to the target side yet Postgres won't delete the replication consumer is offline A logical replication slot works by keeping track of the oldest address in the oldest write-ahead log