Node.JS

Duration: 5 days

Objectives:

• Learn why server-side JavaScript is useful.
• Learn the design and architecture of Node.js applications.
• Build an HTTP server using the core modules in Node.js.
• Developing web applications with ExpressJS.
• Developing scalable REST endpoints with ExpressJS.
• Gain proficiency in utilizing NPM.

Prerequisites:

• A prerequisite for participation is proficiency in programming. 
• Familiarity with Web Applications is essential for all participants. 
• Basic understanding of JavaScript is a requirement for participants.

Prerequisites tutorial

https://developer.mozilla.org/en-US/docs/Web/JavaScript

Contents

Introduction

• What is Node.js?
• Why Node.js?
• Node Modules
• Node Built-in packages.
• Creating your own package.
• Import your own Package.
• NPM (Node Package Manager)
• Local and Global Packages
• Nodejs architecture

Asynchronous Programming

• What is Asynchronous Programming in JavaScript? 
• JavaScript EventLoop 
• Call Stack
• Callbacks 
• Callback Hell 
• Promises 
• Promise Chaining
• Async and Await
• Event Emitter

Built-In Libraries

• Working with the Operating System
• Working with the File System
• Console and Utilities
• Debugging

File System

• Synchronous and Asynchronous IO
• Listing and reading directories and files.
• Writing and updating to files
• File System Watcher

Stream and Events

• What are Streams in Node.js 
• Reading and Writing Streams 
• Understanding and using EventEmitter class 
• Emitting Events 
• Responding to events

NPM

• What Is a Package
• Typical NPM Usage
• NPM Help
• Creating a Package.json
• Setting Defaults
• Installing Packages
• Listing Installed Packages
• Installing Global Packages
• Removing a Package
• Installing Specific Versions
• The NPM Registry
• Searching for Packages
• Pruning
• Using Simple Scripts
• Publishing Your Package

 HTTP and REST

• The HTTP protocol
• Node HTTP Module
• Making a request and response mechanism
• Build a web server 
• Serving to files
• Serving to Json Data
• Collection post data from web pages
• Scaling the application

 ExpressJS

• What is ExpressJS
• The model-view-controller pattern
• Creating a simple HTTPServer using ExpressJS 
• Building a front-end controller
• Routing in Express 
• Templating in Express 
• Templating using JADE
• Defining routes
• Middewares

ExpressJS and MongoDB

• What is MongoDB 
• MongoDB Advantages 
• Documents Collections 
• Mongoose ODM 
• Creating Schemas and Models using mongoose 
• CRUD Operations in MongoDB using Mongoose and Express

Working with Web Sockets

• Creating a web socket server
• Broadcasting message with web sockets
• Creating web sockets with Sockets.io.
• Realtime interaction with Socket.io

ExpressJS and REST

• Understanding the principles of REST 
• Richardson Maturity Model
• Creating a RESTful Web Service using Node Express
• Data Exchange Formats JSON vs. XML 
• Monolith Architecture 
• Microservice Architecture
• Securing REST services 

Building Scalable application using NodeJS

• Worker Threads
• Child Process
• Cluster Modules
• Cloud Deployment 

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