> 3) Instead of the subscriber pulling the slot info, why can't the > publisher (via the walsender or a new bg worker maybe?) push the > latest slot info? I'm not sure we want to add more functionality to > the walsender, if yes, isn't it going to be much simpler? >
Standby pulling the information or at least making a first attempt to connect to the primary is a better design as primary doesn't need to spend its cycles repeatedly connecting to an unreachable standby. In fact, primary wouldn't even need to know the followers, for example followers / log shipping standbys
