NodeJS Internals and Architecture

21h 9m 56s
English
Paid

My favorite part of engineering is making complex systems transparent and understandable.

Node.js is one of the most popular runtimes for server development, yet it often remains a "black box" even for experienced developers. I myself have felt this many times.

This course is the result of months of work on dissecting the architecture and internal mechanisms of Node.js. It is designed for those engineers who cannot work with something opaque.

Read more about the course

This course is for you if you:

  • Want to understand what's happening "under the hood" of Node.js
  • Enjoy dissecting one line of code into hundreds of lines of implementation
  • Wonder why the behavior of a Node program is sometimes unpredictable
  • Want to know why a Node process can terminate - or not terminate
  • Are curious why Node sometimes takes a long time to start
  • Value cross-platform compatibility and want to learn how Node works on all OS

For instance, by knowing how the HTTP module is constructed, you will be able to write a server that handles more requests. Understanding the event loop and its phases will allow you to restructure code logic for improved performance and stability.

If your code "crashes" 1% of the time for reasons that aren't clear - this course will give you an understanding of how to make program behavior predictable. Not with chaotic "quick fixes," but through a deep understanding of the internal workings of Node.

The course will teach you to go in the same direction as Node, rather than "fighting" with its mechanisms.

The course program includes:

Node.js Architecture

  • Phases of the event loop and what happens in each of them
  • How promises work and why they are just "new type of callbacks"
  • Module loading and its impact on performance
  • The structure of Node packages and how it affects your code

Inside Node.js

  • How Node implements asynchronous I/O through libuv
  • Protocols and their implementation in Node
  • Streams and processes: how Node handles concurrency at the OS level

Optimization and Performance

  • Tips on speeding up code based on architectural understanding
  • How to identify "bottlenecks" and work with them
  • When and how to use C++ extensions if JavaScript is no longer sufficient

This course is designed for developers with an intermediate level of knowledge in Node.js who want to deepen their understanding of its architecture and increase their confidence in working with it.

It's advisable to have a general understanding of OS basics, although this is not strictly necessary.

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# Title Duration
1 Introduction 01:57
2 Who this course for? 03:06
3 Course Data 00:50
4 Course Outline 06:59
5 What do you need? 06:24
6 Node JS Architecture Intro 09:30
7 Interpreted Languages and V8 49:02
8 The Event Loop 24:14
9 The Main Module 19:39
10 Timers Phase 26:11
11 Pending Callbacks Phase 14:03
12 Idle, Prepare Phase 18:23
13 Poll Phase (Updated) 47:49
14 Check Phase 23:07
15 Close Callbacks Phase 24:08
16 Process.nextTick 16:46
17 How Promises work under the hood 22:44
18 Require, Import Event 34:12
19 Anatomy of Node Packages 32:35
20 When does Node terminate? 20:31
21 Node Internals Section Intro 06:42
22 libuv Overview 08:05
23 Asynchronous IO in the Operating System 29:35
24 Inside Node Network IO 43:36
25 Inside Node File IO 51:51
26 Inside Node HTTP 01:14:04
27 Inside Node HTTPS 01:00:56
28 Inside Node DNS 48:00
29 Inside Node TCP 48:37
30 Inside Node UDP 34:03
31 Inside Node Streams 01:03:12
32 Process vs Thread 01:00:38
33 Worker Threads 51:55
34 Child Process and Cluster 36:31
35 Optimization Section Intro 13:23
36 Node Performance 39:36
37 Debugging NodeJS 08:07
38 Capturing Node's Traffic 32:36
39 Request modules performance showdown 22:24
40 C++ Add-ons 39:22
41 Course Summary 08:39
42 Proxy vs Reverse Proxy 20:06
43 Memcachd and NodeJS 01:05:48

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