The CDC method does not consuming replication slot

Replication Slot · feature introduced in PostgresQL along with logical decoding · is a feature that ensures that the master server will

Poll for PostgreSQL Write-Ahead Log records using Streaming Replication Slots

replication slot already exists Unfortunately, PostgreSQL does not provide a direct function or view that shows the size of the replication slot in terms of disk space However, you can

replication slot postgres  postgresql_slot module