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所在平台: Udemy |
课程主页: https://www.udemy.com/course/nodejs-internals-and-architecture/
课程评论：没有评论
**Coursera 课程总结：NodeJS 内部原理与架构** 本课程专为希望深入理解 NodeJS 运行机制的工程师设计，特别是那些对软件“透明度”有极致追求，不满足于仅仅使用而不理解背后原理的学习者。课程旨在揭开 NodeJS 普遍存在但又鲜为人知的内部运作的神秘面纱。 **课程核心内容：** * **NodeJS 架构：** 详细解析 NodeJS 的事件循环（Event Loop）的各个阶段及其具体执行过程。深入讲解 Promise 的本质是回调函数，揭示模块的加载时机及其对性能的影响，并剖析 Node 包的结构。 * **Node 内部原理：** 深入探索 NodeJS 如何通过 `libuv` 实现异步 I/O。详细讲解 NodeJS 中各个协议的实现机制，以及 NodeJS 如何在用户层面和进程层面实现并发。 * **Node 优化与性能：** 在掌握了 NodeJS 内部原理和架构的基础上，本课程将提供一系列实用的技巧，指导学员如何编写更高效、性能更优的代码。此外，课程还会介绍如何使用 C++ 插件来扩展 NodeJS 的能力，弥补纯 JavaScript 在某些场景下的局限性。 **学习目标：** 通过学习本课程，你将能够： * 理解 NodeJS 事件循环的每一个阶段，并知道代码在何时何地被执行。 * 分析 NodeJS 程序的性能瓶颈，并进行针对性优化。 * 提高 NodeJS 程序的可预测性，减少因不了解内部机制而导致的错误。 * 掌握 NodeJS 的异步 I/O 原理，写出更高效的后端服务。 * 了解 NodeJS 的并发机制，学会如何更好地利用多核资源。 * 在必要时，利用 C++ 插件来增强 NodeJS 的功能。 **课程适合人群：** 本课程面向已经熟悉 NodeJS 的中级工程师。具备操作系统基础知识将非常有益，但非必需。 **课程价值：** 本课程将帮助你从“如何使用”进阶到“理解和掌握” NodeJS，让你在软件工程领域具备更深厚的功底，能够更自信、更高效地构建和优化后端应用。通过理解 NodeJS 的“纹理”，您可以与其协同工作，而不是对抗，从而“移除阻塞，让主循环相位‘呼吸’”。
My favorite thing in software engineering is the art of making it transparent.Node is one of the most popular runtimes used on backend engineering yet I feel it is the least understood. I surely felt this way at times.I spent months working on a course to demystify NodeJS Internals and Architecture and distilled this in this comprehensive course.I built this course is for the engineers who can't stand working with something opaque.They love to understand what is running behind the engine.They enjoy tearing apart 1 the line of code into its original 1000 lines.They question why is the output of a Node program is unpredictable.They want to know when does the Node process exit.They want to know why Node takes so long to start in some cases.They appreciate how Node works on all operating systems and would like to know how it does that.For example by understanding the internals of HTTP module, you can write a backend in Node that accepts and process more requests. Every line of code you write you would think of how and when Node will process it.By understanding the event loop and the different stages you can tune and re-order your code to achieve best performance and even consistent result.Ever wrote a program in Node that fails 1% of the time while succeeds 99%? Understanding Node architecture helps you make your program predicable. As opposed to adding workaround because you don't understand. We all did that.It is all about removing blockage and letting the main loop phases "breath". When we build software the problem is we often go against the grain. Understanding where the friction is in Node allow you to work with it as oppose to against it.In this course I cover the following- NodeJS ArchitectureI cover the various phases in the event loop and what exactly happens in each phase, how promises are just callbacks, how and when modules are loaded and their effect on performance, Node packages anatomy and more- Node InternalsThis is where we go one layer deeper, how Node truly achieves asynchronous IO with libuv, and how each protocol in node is implemented. How concurrent node works on both user level threads and process level.- Node Optimization and PerformanceNow that we understand the internals and architecture of Node, this is where we discuss tips how to make the code runs more efficiently and more performance. And only when we exhaust all other avenues Node provides ways to extend it with C++ add-ons where JavaScript just can't no longer hold.This course is for intermediate students who are familiar with Node and want to understand how it works. While not required, I recommend taking the fundamentals of operating system course as a prerequisite of this course.
