只需让线程睡眠，就可以在Restlet中实现长轮询吗？ [英] Can long-polling be achieved in Restlet by just making the thread sleep?

问题描述

如果我让线程进入睡眠状态，那么在为特定资源（即 ServerResource ）发出 GET 请求时模拟长轮询）会发生什么？框架是否支持此功能？从Java EE的角度来看，有什么副作用？它是否可以很好地扩展Tomcat（或任何其他服务器？）

When making a GET request for a particular resource (i.e. ServerResource) if I put the thread to sleep (to simulate long-polling) what would happen? Does the framework support this? From a Java EE standpoint what are the side-effects? Does it scale well with Tomcat (or any other server?)

是否有任何人试图通过使请求线程休眠来使用Restlet实现长轮询？

Has any-one tried implementing long-polling using Restlet by just making the request thread sleep?

似乎restlet不支持彗星风格的Web应用程序，因此可以说是 hack 的问题。

It seems restlet has no support for comet-style web applications and hence the question of such a hack, so to speak.

推荐答案

只要您不需要大量并发连接就可以阻止线程，这样会导致可伸缩性问题。

Blocking a thread is possible as long as you don't need a huge number of concurrent connections in which case this will cause a scalability issue.

在用于JavaSe的Restlet Framework版本2.1中，内部非阻塞NIO连接器添加了这样的功能（使用有限的线程池处理任意数量的连接），即使它尚未完全稳定并记录在案。

In version 2.1 of the Restlet Framework edition for JavaSe, the internal non-blocking NIO connector has added such capabilities (handling any number of connections with a limited thread pool) even though it isn't fully stable and documented yet.

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