PostgreSQL Logical Replication Gotchas

drop replication slot postgres % playccc postgres drop replication slot The replication slot basically tells Postgres not to recycle or remove any WAL files that could ultimately prevent it from catching up with postgres replication slot Replication slots are used to safeguard against the premature deletion of WAL segments before they have been applied by the standby server, thus

postgresql create replication slot  postgresql_slot module