I'm using PostgreSQL at Justcoin[1] and am quite pleased with it. We direct all writes to one server and reads to another. It's open source[2], so you can have

I'm using PostgreSQL at Justcoin[1] and am quite pleased with it. We direct all writes to one server and reads to another. It's open source[2], so you can have a poke around and see. [1] https://justcoin.com https://justcoin.com [2] https://github.com/justcoin/snow https://github.com/justcoin/snow