Akka

Scalable real-time transaction processing.

Build powerful concurrent & distributed applications more easily. Akka is a toolkit and runtime for building highly concurrent, distributed, and resilient message-driven applications on the JVM.

http://akka.io

• Simple Concurrency & Distribution
  • Asynchronous and Distributed by Design. High-level abstractions like Actors, Streams and Futures.
• Resilient by Design
  • Write systems that self-heal. Remote and local supervisor hierarchies.
• High Performance
  • 50 million msg/sec on a single machine. Small memory footprint; ~2.5 million actors per GB of heap.
• Elastic & Decentralized
  • Adaptive cluster management, load balancing, routing, partitioning and sharding.
• Extensible
  • Use Akka Extensions to adapt Akka to fit your needs.