如何睡在node.js的线程不影响其他线程？ [英] How to sleep the thread in node.js without affecting other threads?

问题描述

根据理解Node.js的事件循环，Node.js的支持单线程模型。这意味着，如果我做多次请求到服务器的nod​​e.js，它不会产卵每个请求一个新的线程，但将由一个执行每个请求之一。这意味着，如果我做我的node.js code中的第一个请求以下，同时新的请求到来时节点上，第二个请求必须等待，直到第一个请求完成，其中包括5秒的睡眠时间。对吧？

As per Understanding the node.js event loop, node.js supports a single thread model. That means if I make multiple requests to a node.js server, it won't spawn a new thread for each request but will execute each request one by one. It means if I do the following for the first request in my node.js code, and meanwhile a new request comes in on node, the second request has to wait until the first request completes, including 5 second sleep time. Right?

var sleep = require('sleep');
    sleep.sleep(5)//sleep for 5 seconds

有没有一种方式，可以的Node.js产卵为每个请求一个新的线程，使得第二请求没有等待完成第一个请求，或者我可以调用特定的线程睡眠而已？

Is there a way that node.js can spawn a new thread for each request so that the second request does not have to wait for the first request to complete, or can I call sleep on specific thread only?

推荐答案

如果你指的是故宫模块睡眠，它在睡眠自述笔记将阻止执行。那么，你是正确的 - 这是不是你想要的。相反，你要使用的setTimeout 这是非阻塞。下面是一个例子：

If you are referring to the npm module sleep, it notes in the readme that sleep will block execution. So you are right - it isn't what you want. Instead you want to use setTimeout which is non-blocking. Here is an example:

setTimeout(function() {
  console.log('hello world!');
}, 5000);

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