Twitter message queues move to Scala | The Scala Programming LanguageTo handle the peak rates of Tweeting, 5000 per minute during the Obama Inauguration, Robey Pointer at Twitter has moved their main message queue from Ruby to Scala for improved performance. He explains the concepts behind the Twitter Kestrel project on his live journal and the more concise 1500 lines of Scala code can be seen as open source project here.
http://www.codecommit.com/blog/ruby/jruby-interop-dsl-in-scala
Groovy (and Ruby) Only Solves Half the Problem - DZone Java
