Well, how far in advance are you planning? It's easy to over-optimize when you're starting out and you end up all tangled in an overly-complex system that is o

Well, how far in advance are you planning? It's easy to over-optimize when you're starting out and you end up all tangled in an overly-complex system that is over-engineered for your needs. Everything in moderation. You can often run a single master PostgreSQL system into the millions of transactions a second without having to resort to sharding and other complexities.