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Akka
来自开放百科 - 灰狐
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.
目录 |
简介
功能
理论
交互模式
- Fire and Forget（点火和忘记）
- Request-Response（请求-响应）
- Adapted Response（适配的响应）
- Request-Response with ask between two actors（请求-响应，两个参与者之间有询问）
- Request-Response with ask from outside an Actor（请求-响应，来自外部参与者的询问）
- Generic response wrapper（通用响应包装器）
- Ignoring replies（忽略回复）
- Send Future result to self（给自己发送Future结果）
- Per session child Actor（每会话子参与者）
- General purpose response aggregator（通用目的响应聚合器）
- Latency tail chopping（延迟尾部去掉）
- Scheduling messages to self（将消息安排给自己）
- Responding to a sharded actor（响应给一个共享参与者）
Fire & Forget
Request Response
Adapted Response
Ask from Actor
Ask from Outside
Pipe to Self
Per session child Actor
Aggregator
Tail Chopping
Scheduling
Sharded Actor
指南
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
集群
用户
- Paypal squbs
- Apache Usergrid
- 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
- Google: 1000 node Akka cluster on Google Compute Engine (GCE)
开发者
文档
- Scalable task distribution with Scala, Akka and Mesos
- 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
Actor层次结构
Actor Paths
Actor生命周期
参考架构
Lightbend架构
squbs
链接
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