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文章 2023-07-06 来自：开发者社区

最近我有个学员写了个 Node.js 脚本程序，定时从某个服务器下载文件，并向另一个云服务商上传文件。但是每次只能先下载一个文件，再去上传一个文件。效率比较低。于是他向我请教，怎么样才能提高效率？我告诉他应该用 Node 的多进程技术。什么是 Node 多进程？Node 是在单个线程中运行，我们虽然没办法开启额外的线程，但是可以开启进程集群。这样可以让下载任务和上传任务同时进行。使用多进程进行初....

文章 2022-02-20 来自：开发者社区

JS中的进程、线程、任务队列、事件循环、宏任务、微任务、执行栈等概念理解

JS中的进程、线程、任务队列、事件循环、宏任务、微任务、执行栈等概念理解javascript中有很多需要知道的概念，尤其是标题中列出来的这些，今天就来过一下这些概念。一、进程和线程浏览器的每一个tab页可以看做是浏览器内核进程，每个进程下面会有多个线程来互相配合完成任务比如 GUI线程、JS引擎线程、网络线程、定时器线程等二、任务队列任务队列可以当做是一个个的对调任务，当主线程的任务完成后，就开....

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