PostgreSQL: All replication slots are in use

Create replication slots to enable the CDC feature postgres delete replication slot My understanding is that the replication slot prevents it from deleting that log, right? Until both the standby and postgres delete replication slot If stopping postgres server takes time, the VM or container will have to be killed forcefully which can take a considerable amount of time as

postgres create logical replication slot Unused slots can be dropped to remove WAL segments using the pg_drop_replication_slot command There generally is one replication slot and WAL sender per