We are using this: http://github.com/robey/kestrel http://github.com/robey/kestrel It is written in scala for use at Twitter. It is super simple to getting run

We are using this: http://github.com/robey/kestrel http://github.com/robey/kestrel It is written in scala for use at Twitter. It is super simple to getting running and is so far robust. We are using it to pass JSON messages around our system for background processing tasks.