Akka (http://akka.io/) is a framework to build concurrent, distributed, and resilient message-driven applications in Scala, Java, and .NET. Building applications with Akka has several advantages, which are as follows:
High performance: Akka delivers up to 50 million messages per second on a commodity hardware having ~2.5 million Actors per GB of RAM.
Resilient by design: Akka systems have self-healing properties for local and remote Actors.
Distributed and elastic: Akka has all the mechanisms to scale your application, such as cluster, load balancing, partitioning, and sharding. Akka lets you grow or shrink your Actors on demand.
The Akka framework provides good abstractions for concurrent, asynchronous, and distributed programming, such as Actors, Streams, and Futures. There are plenty of great success cases in production, such as BBC, Amazon, eBay, Cisco, The Guardian, Blizzard, Gilt, HP, HSBC, Netflix, and so many others.
Akka is a truly reactive framework...