akka / akka   2.8.6

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Build highly concurrent, distributed, and resilient message-driven applications on the JVM

Scala versions: 3.x 2.13 2.12


The Akka family of projects is managed by teams at Lightbend with help from the community.

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.

Current versions of all Akka libraries

The current versions of all Akka libraries are listed on the Akka Dependencies page. Releases of the Akka core libraries in this repository are listed on the GitHub releases page.


You can join these groups and chats to discuss and ask Akka related questions:

In addition to that, you may enjoy following:


Contributions are very welcome!

If you see an issue that you'd like to see fixed, or want to shape out some ideas, the best way to make it happen is to help out by submitting a pull request implementing it. We welcome contributions from all, even you are not yet familiar with this project, We are happy to get you started, and will guide you through the process once you've submitted your PR.

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.


Akka is licensed under the Business Source License 1.1, please see the Akka License FAQ.

Tests and documentation are under a separate license, see the LICENSE file in each documentation and test root directory for details.