Postgresql logical replication slots: Are they 'expensive'? Is having

If you use a logical decoding plug-in which supports logical replication messages — like pgoutput since Postgres 14 — then that's all that's

The postgresql_replication_slot resource creates and manages a replication slot on a PostgreSQL server database

create replication slot #Physical PostgreSQL Replication · #Logical PostgreSQL Replication · #Setup Physical PostgreSQL Replication on Ubuntu · #Step 1: Install

create your own slot machine online free Setup using CDC​ · Provide additional REPLICATION permissions to read-only user · Enable logical replication on your Postgres database · Create a replication slot