Netty in Action笔记(Chapter 9)Bootstraping Netty applications

最新推荐文章于 2025-09-11 12:10:31 发布

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最新推荐文章于 2025-09-11 12:10:31 发布

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文章标签： netty

原文链接：https://segmentfault.com/a/1190000002590691

本文深入探讨了Netty框架中EventLoop的工作原理及其重要性。解析了EventLoop如何为Channel处理所有操作，并通过共享EventLoop减少上下文切换，提高效率。

EventLoop and EventLoopGroup
Remember the EventLoop that is assigned to the Channel is responsible to handle all the operations for the Channel. Which means whenever you execute a method that returns a ChannelFuture it will be executed in the EventLoop that is assigned to the Channel.
The EventLoop is executed by the Thread that is bound to it.
The EventLoopGroup contains a number of EventLoops and is responsible to assign an EventLoop to the Channel during its registration.

Why share the EventLoop ?
When you share the EventLoop you can be sure all Channels that are assigned to the EventLoop are using the same Thread. Remember an EventLoop is assigned to a Thread which execute the operations of it.
Because of using the same Thread there is no context-switching envolved and thus less overhead.

【9.6 Using Netty ChannelOptions and attributes】