> I think there is only one place where RethinkDB is better then PostgreSQL: replication + automatic failover.
I was about to ask. Are you guys running a single server deployment? Because, while I haven't used RethinkDB yet, it appeals to me precisely because PostgreSQL is an absolute pain to operate beyond single node setups. I've heard citusdb tries to tackle this, I don't know if they succeeded but still it doesn't look nearly as friendly as RethinkDB.