Let's see: - crash and let a supervisor restart you - isolate components via specialist processes and systems - keep schema/types flexible - be stateless -

Let's see: - crash and let a supervisor restart you - isolate components via specialist processes and systems - keep schema/types flexible - be stateless - cache & denormalize - be redundant - let other processes handle non-realtime tasks in the background Sounds like he spent a long time learning the hard way that reddit should have been written in Erlang in the first place :)