What is Replication slots in PostgreSQL Streaming

PostgreSQL Replication Slots replication slot Postgresql replication slot does not exist · 3 You probably shouldn't be connecting to localhost when creating the subscription: CONNECTION replication slot Hey! I would want to create a replication slot in order to sync the changes in my database to GCP BigQuery When I try to run the command to

replication slot already exists 1 Replication Slot: A replication slot on the primary server is what reads changes from the WAL and passes it to the output plugin to be