Java Servlets线程模型 [英] Java Servlets threading model

问题描述

我想知道是否有人可以向我解释Java Servlet的线程模型? 据我了解，该servlet容器中只能存在一个servlet实例，并且如果多个线程正巧在等待该servlet，则会以某种方式对请求进行序列化. 我不知道序列化过程是如何发生的...

I was wondering if anybody could explains me the threading model of Java Servlets? As I understood about that, there is only one instance of a servlet can be existed in the servlet container and if muliple threads happens to be waiting for that servlet, there requests are serialized in some manner. I don't know how that serialization process happens...

有人可以解释吗?

推荐答案

如果请求是由servlet串行处理的，则Web应用程序将非常慢.小服务程序实际上必须是线程安全的，因为小服务程序的单个实例可以负责同时处理多个请求.

If requests were handled serially by servlets, then web applications would be very slow. It's actually the case that servlets need to be thread-safe, because a single instance of a servlet can be responsible for handling multiple requests simultaneously.

通常，Web应用程序容器将维护一个线程池以处理请求，传入请求将按需分配给线程.

Usually a web application container will maintain a thread pool for handling requests, with incoming requests being assigned to threads on an on-demand basis.

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