How do you monitor and manage PostgreSQL replication slot lag?

oldest replication slot lag   Dan oldest replication slot lag

Check the number of WAL files retained and spilled files for each replication slots Perfdata returns the number of WAL kept for each slot and

The age of the oldest unvacuumed transaction ID, in transactions oldestReplicationSlotLag Shows how far behind in seconds the most lagging replica is in terms OldestReplicationSlotLag Growing: This indicates that the replication slot used by DMS is not being consumed or advanced as expected In

far cry 3 poker replication slot, nil, (>= 0 oldest transaction that this slot needs the database to retain VACUUM The age of the oldest unvacuumed transaction ID, in transactions oldestReplicationSlotLag Shows how far behind in seconds the most lagging replica is in terms