Hi! Thank you.
When you use replication slots, it is very important to put in place a monitoring solution to check if too much WAL is retained, and note that there is nothing able to do that natively in core Postgres. There are however multiple ways to solve this problem, like a background worker (for the slot monitoring as well as optionally killing and/or dropping), a simple cron job or even check_postgres.
Where to find some sample how to implement this ? I read from docs that slot cannot dropped if it is in use. How to stop replication in this case. Andrus.
