I have a server with
physical replication. It has been working very well till now.
I follow the procedure here : https://linuxhint.com/setup-physical-replication-postgresql/ to create the replication.
Now I want to make another physical replication for the same master (so it is 1 master replicated onto 2 slaves).
Based on the previous experience, during
postgres service restart, it takes 21 hours for the
replica to be in synch with the master.
Before I start, how do I know if this master has reached it's performance limit? How can I find out? Will the second physical replication take huge chunks out of performance?