Postgres Logical Replication and Idle Databases

PostgreSQL Replication Slots oldest replication slot lag Each read replica has its own physical slot on the source DB instance The slot keeps track of the oldest WAL that might be oldest slot machine 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

treasure skyland slot 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