Non blocking, composable reactive web programming with Iteratees

Being a part of the wild wild web, your application is encompassed by a lot of streams of live business, social events and messages. It is becoming hard for any modern application to resist integrating into these flows of data. To do so, however, you need the appropriate paradigm with a composable model to consume, combine, forward and publish these live streams with minimal and predictable consumption of resources (CPU, memory, ...). Play2, a web framework targeting Java and Scala, uses functional programming and a model called Iteratee to respond to these needs.