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* Always be explicit about what message types an interceptor can handle, to avoid ClassCastException if another message type is passing. That may happen when the inner behavior understands other messages than it says in it's declared behavior type by using narrow. EventSourcedBehaviorImpl is an example. * Minimized failing tests * Supervision interceptor is of type Any since failures of all messages must be handled * Changed PoisonPillInterceptor to only intercept signals * rename type params to Outer and Inner * separate BehaviorSignalInterceptor * which only intercepts signals and messages bypass, e.g. PoisonPillInterceptor * also made aroundSignal optional to override in BehaviorInterceptor * Add test for interceptors combined with EventSourcedBehavior * ClassTag not needed for LogMessagesInterceptor * since it can handle Any * test supervision of different message type * clarify low level * docs for interceptMessageClass param and ClassTag * remove O type parameter in supervision * remove extra setup for RestartSupervisor, already factory * mention in migration guide |
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Akka 
We believe that writing correct concurrent & distributed, resilient and elastic applications is too hard. Most of the time it's because we are using the wrong tools and the wrong level of abstraction.
Akka is here to change that.
Using the Actor Model we raise the abstraction level and provide a better platform to build correct concurrent and scalable applications. This model is a perfect match for the principles laid out in the Reactive Manifesto.
For resilience, we adopt the "Let it crash" model which the telecom industry has used with great success to build applications that self-heal and systems that never stop.
Actors also provide the abstraction for transparent distribution and the basis for truly scalable and fault-tolerant applications.
Learn more at akka.io.
Reference Documentation
The reference documentation is available at doc.akka.io, for Scala and Java.
Community
You can join these groups and chats to discuss and ask Akka related questions:
- Forums: discuss.akka.io
- Chat room about using Akka:
- Issue tracker:
In addition to that, you may enjoy following:
- The news section of the page, which is updated whenever a new version is released
- The Akka Team Blog
- @akkateam on Twitter
- Questions tagged #akka on StackOverflow
- Projects built with Akka:
Contributing
Contributions are very welcome!
If you see an issue that you'd like to see fixed, the best way to make it happen is to help out by submitting a pull request implementing it.
Refer to the CONTRIBUTING.md file for more details about the workflow, and general hints on how to prepare your pull request. You can also ask for clarifications or guidance in GitHub issues directly, or in the akka/dev chat if a more real time communication would be of benefit.
A chat room is available for all questions related to developing and contributing to Akka:
License
Akka is Open Source and available under the Apache 2 License.