what's the promised value for PostgreSQL replication lag?

If your database is constantly being updated, you should closely monitor replication delay on read replica instances, to ensure that they are

Barman introduces support for replication slots with PostgreSQL servers or above, therefore allowing WAL streamingonly configurations

oldest replication slot lag The lag of a replication slot can be measured as the difference between the current WAL location on the primary and the last WAL position confirmed as received

centurion slot game Replication Slots · the oldest WAL required by the consumer of the slot