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Akka Project

README.md

Akka -- Build powerful reactive, concurrent, and distributed applications more easily

Akka is a toolkit for building highly concurrent, distributed, and resilient message-driven applications for Java and Scala.

Akka is the implementation of the Actor Model on the JVM.

Simpler Concurrent & Distributed Systems

Actors and Streams let you build systems that scale up, using the resources of a server more efficiently, and out, using multiple servers.

Resilient by Design

Building on the principles of The Reactive Manifesto Akka allows you to write systems that self-heal and stay responsive in the face of failures.

High Performance

Up to 200 million msg/sec on a single machine. Small memory footprint; ~2.5 million actors per GB of heap.

Elastic & Decentralized

Distributed systems without single points of failure. Load balancing and adaptive routing across nodes. Event Sourcing and CQRS with Cluster Sharding. Distributed Data for eventual consistency using CRDTs.

Reactive Streaming Data

Asynchronous non-blocking stream processing with backpressure. Fully async and streaming HTTP server and client provides a great platform for building microservices. Streaming integrations with Alpakka.

Find the full documentation at https://akka.io

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  1. akka-sdk akka-sdk Public

    The Akka SDK offer a set of components that let you build durable, responsive, real-time services.

    Java 14 9

  2. akka-core akka-core Public

    A platform to build and run apps that are elastic, agile, and resilient. SDK, libraries, and hosted environments.

    Scala 13.2k 3.6k

  3. akka-http akka-http Public

    The Streaming-first HTTP server/module of Akka

    Scala 1.3k 594

  4. akka-projection akka-projection Public

    Akka Projections is intended for building systems with the CQRS pattern, and facilitate in event-based service-to-service communication.

    Scala 102 37

  5. alpakka alpakka Public

    Alpakka is a Reactive Enterprise Integration library for Java and Scala, based on Reactive Streams and Akka.

    Scala 1.3k 638

  6. alpakka-kafka alpakka-kafka Public

    Alpakka Kafka connector - Alpakka is a Reactive Enterprise Integration library for Java and Scala, based on Reactive Streams and Akka.

    Scala 1.4k 378

Repositories

Showing 10 of 52 repositories
  • akka-projection Public

    Akka Projections is intended for building systems with the CQRS pattern, and facilitate in event-based service-to-service communication.

    akka/akka-projection’s past year of commit activity
    Scala 102 37 77 (2 issues need help) 4 Updated Oct 30, 2025
  • akka-diagnostics Public

    A platform to build and run apps that are elastic, agile, and resilient. SDK, libraries, and hosted environments.

    akka/akka-diagnostics’s past year of commit activity
    Scala 3 3 4 0 Updated Oct 30, 2025
  • akka-sdk Public

    The Akka SDK offer a set of components that let you build durable, responsive, real-time services.

    akka/akka-sdk’s past year of commit activity
    Java 14 9 29 13 Updated Oct 30, 2025
  • akka-persistence-cassandra Public

    A replicated Akka Persistence journal backed by Apache Cassandra

    akka/akka-persistence-cassandra’s past year of commit activity
    Scala 325 134 57 (10 issues need help) 4 Updated Oct 30, 2025
  • alpakka Public

    Alpakka is a Reactive Enterprise Integration library for Java and Scala, based on Reactive Streams and Akka.

    akka/alpakka’s past year of commit activity
    Scala 1,269 638 222 (2 issues need help) 6 Updated Oct 30, 2025
  • akka-persistence-r2dbc Public
    akka/akka-persistence-r2dbc’s past year of commit activity
    Scala 24 19 38 3 Updated Oct 30, 2025
  • akka-persistence-jdbc Public

    Asynchronously writes journal and snapshot entries to configured JDBC databases so that Akka Actors can recover state

    akka/akka-persistence-jdbc’s past year of commit activity
    Scala 309 139 39 (2 issues need help) 2 Updated Oct 30, 2025
  • akka-persistence-dynamodb Public

    DynamoDB plugin for Akka Persistence

    akka/akka-persistence-dynamodb’s past year of commit activity
    Scala 2 4 13 3 Updated Oct 30, 2025
  • akka-grpc Public

    A platform to build and run apps that are elastic, agile, and resilient. SDK, libraries, and hosted environments.

    akka/akka-grpc’s past year of commit activity
    Scala 432 127 164 (14 issues need help) 5 Updated Oct 30, 2025
  • akka-core Public

    A platform to build and run apps that are elastic, agile, and resilient. SDK, libraries, and hosted environments.

    akka/akka-core’s past year of commit activity
    Scala 13,227 3,582 876 (200 issues need help) 27 Updated Oct 30, 2025
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