Akka

Akka：是一套构建基于 JVM 之上的高并发、分布式、容错、事件驱动应用的工具集和运行时，使用 Java 和 Scala 编程语言，采用 Apache v2 许可协议。

Akka提供类似Erlang那样健壮的基于消息的计算，其高性能表现：50 million msg/sec on a single machine. Small memory footprint; ~2.5 million actors per GB of heap.

理论

• 参与者模型(Actor model)

项目

Akka ecosystem Akka community projects

• GearPump
• Spray
• Ainterface: Runs an Erlang node on an ActorSystem of Akka.
• CurioDB: Redis Clone
• Akka Analytics: Large-scale event processing with Akka Persistence and Apache Spark
• Cassandra Plugins for Akka Persistence
• Eventuate
• activator-akka-cluster-sharding-scala

Modules

• akka-actor – Classic Actors, Typed Actors, IO Actor etc.
• akka-agent – Agents, integrated with Scala STM
• akka-camel – Apache Camel integration
• akka-cluster – Cluster membership management, elastic routers.
• akka-kernel – Akka microkernel for running a bare-bones mini application server
• akka-osgi – base bundle for using Akka in OSGi containers, containing the akka-actor classes
• akka-osgi-aries – Aries blueprint for provisioning actor systems
• akka-remote – Remote Actors
• akka-slf4j – SLF4J Logger (event bus listener)
• akka-testkit – Toolkit for testing Actor systems
• akka-zeromq – ZeroMQ integration

用户

• BaasBox
• "We're delivering the future of money to over 148 million people worldwide. Using Scala and Akka, we can rapidly develop, test, and deliver services that are reliable and performant at massive scale." - PayPal

开发者

• Konrad Malawski

文档

• The Rise of 1.0: How Reactive Streams and Akka Streams Change the JVM Ecosystem
• Event-Sourced Architectures with Akka
• Akka 分片集群的实现

图集

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  Actor生命周期

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  参考架构

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  Lightbend架构

链接

• Akka官网
• Akka @ GitHub
• Akka开放文档
• Akka Scaladoc
• Akka Javadoc
• Akka Team 博客: Let it crash
• Migrating from Spray to Akka HTTP
• Akka Essentials source code