Hi Daniel from Authy here. I helped with the design of this infrastructure last year and I was a little shocked we weren't able to do automatic fail-over with PostgreSQL.<p>I'd be interested to know if anyone here is running a Postgres pool that handles automatic fail-over how are you doing it? Specifically which watch-dog are you using, how are they handling slave to master promotion, how do you add more slaves automatically and how do you load-balance.