title: What are the best use cases for Akka framework
body: <p>I have heard lots of raving about <a href="http://akka.io/" rel="noreferrer">Akka</a> framework (Java/Scala service platform), but so far have not seen many actual examples of use cases it would be good for. So I would be interested in hearing about things developers have used it succesfully.</p>
  
  <p>Only one limitation: please do not include case of writing a chat server. 
  (why? since this has been overused as an example for lots of similar things)</p>