It supports scaling vertically by throwing in more cache, faster CPU, etc. Once you outgrow that, it supports horizontal scaling by replicating to read-only slaves.
Re:Facebook and Heroku
by malyk on Thursday September 15, 2011 @04:14PM
(#3001934)
I'm aware as we are running on heroku here, but it gets expensive quick and your options are more limited than if you roll your own. Then again, that goes for the whole platform.
It supports scaling vertically by throwing in more cache, faster CPU, etc. Once you outgrow that, it supports horizontal scaling by replicating to read-only slaves.