Hello everyone, I am designing a heartbeat system between replicas to know when a replica goes down so that necessary measures can be taken. As I see, there are two ways of doing it:
1) Creating a separate heartbeat process on replicas. 2) Creating a heartbeat message, and sending it over the connection that is already established between walsender and walreceiver. With 2, sending heartbeat from walsender to walreceiver seems trivial. Sending a heartbeat from walreceiver to walsender seems tricky. Going through the code, it seems that the walreceiver is always in the PGASYNC_COPY_OUT mode (except in the beginning when handshaking is done). Can you recommend the right way of doing this? Thank you. Regards --------------------------- Postgres version = 9.0 beta-4
