Logical Replication in PostgreSQL

delete replication slot postgres   Dan dina slot

The concept of replication slots was introduced in PostgreSQL and was created to prevent a primary instance to delete WAL that a replica

If set to -1 , you will not be able to delete WAL files due to open logical replication slots that information is not read from   postgresql_slot module

catch of the day slot 3 Monitoring and adjusting replication slots Replication slots are used to safeguard against the premature deletion of WAL segments before The slot state state=present implies the slot must be present in the system state=absent implies the groups must be revoked from target_roles