As some of you may have noticed ;-) , the combination of Scala, Play and Akka is now my preferred platform for creating performant, realtime and scalable web architectures. Until now, only little was documented about one of the most powerful features of Play, but they just updated the Wiki!
Progressive Stream Processing and manipulation is an important task in modern Web Programming, starting from chunked upload/download to Live Data Streams consumption, creation, composition and publishing through different technologies including Comet and WebSockets.
Read more about it: Wiki link