What is

and how it became so popular?

Trivikram Kamat

Software Development Engineer

Twitter: @trivikram

Github: @trivikr

3

My history with Node.js

  • Have been using Node.js for 2.5 years
  • Started contributing to Node.js core in Oct 2017
    • providing HTTP/2 support
  • Became Node.js core collaborator in March 2018
  • Conducted two internal Node.js Code+Learn events
  • Mentoring two more Code+Learn events
  • Speaking about unit testing in Node.js core at NodeConf EU 2018

How popular is Node.js?

Why should you be excited about Node.js?

  • Extremely simple and minimal
  • Easy to discover and consume packages
  • Increases developer productivity
  • True asynchronous I/O operations

What will you learn?

  • Quick history up to V8
    • CPU and machine code
    • JavaScript and ECMAScript
    • JavaScript Engines
    • Chrome's V8
  • How can JavaScript manage a server?
  • What problems Node.js solves?
  • We'll write a Node.js server!

Q: Why was the JavaScript reality show cancelled?

A: Because it was scripted! 😉

CPU and Machine Code

Programming Language

 

Machine Code

Instructions Sets

  • ARM

  • IA-32

  • MIPS

  • x86

ECMAScript

A standard which JavaScript is based on

JavaScript Engine

A program which executes JavaScript code

Google

Chrome

Mozilla

Firefox

Microsoft

Edge

Apple

Safari

V8

SpiderMonkey

ChakraCore

JavaScriptCore

Q: How do you comfort a JavaScript Bug?

A: You console it 😄

Source: https://elijahmanor.com/

JavaScript

Code

Machine

Code

Chrome's V8 engine

JavaScript

Code

Machine

Code

Your C++ Program

What JavaScript had to do to manage a server?

  • Better ways to organize our code into reusable pieces
  • Ways to deal with files and databases
  • Ability to communicate over the internet
  • Ability to accept standard request and send responses

Why are businesses excited about Node.js?

It's easy to just employ full stack engineers who write JS code for both client and server side

Client

Server

Request

Response

Browser

JavaScript

Server

Perl/PHP/Python

Java/C# etc

JavaScript

Talk is cheap,

Show me the Code!

As Abraham Lincoln once said:

- Linus Torvalds

Creator of Linux and Git

Let us write a Node.js server in 60 seconds!

Thank you for listening!

Trivikram Kamat

Twitter: @trivikram

Github: @trivikr

Slides: https://slides.com/trivikram/what-is-nodejs

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