Node JS

open source, a cross-platform  environment for  executing JS code​

Node JS = V8 + I/O + libraries

What is Node js

Why Node js

Js Everywhere

Asynchronous and Event Driven

Very Fast − V8 (non-blocking code)

Fast prototyping and Highly Scalable

A lot of libraries and solutions (NPM)

Community

It is not advisable to use Node.js for CPU intensive applications.

Architecture

event queue

no window here

Rest ​API