Logical replication and physical standby failover

In Postgres , replication slots were introduced A process receiving changes via streaming replication can create a replication slot on the

I have replication slots which are inactive and their xmin date is now a few days old This matches up with oldest replication slot lag metric

oldest replication slot lag The lagging size of the replica lagging the most in terms of WAL data received The disk space used by replication slot files Applies to PostgreSQL type

slot pink A newly created standby is not a valid failover-promotion candidate for a logical replication primary until an initial period where slots exist