Postgres replication slots grow indefinitely

The solution is replication slots, a feature provided by Postgres that ensures the primary server only discards WAL records after they have been received by the

In the context of PostgreSQL's logical replication, a “slot” is a mechanism used to keep track of the replication stream's progress Logical

postgresql create replication slot Logical replication uses a publish and subscribe model with one or more subscribers subscribing to one or more publications on a publisher node Subscribers

postgres create logical replication slot  postgresql_slot module