Node JsA platform for scalable network applications...

By M. Riyaz

Topics Introduction.

What is Node Js?

Why Node Js?

Begin with node js.

Node Js vs SignalR.

Making Believable.

Tough Part.

Introduction

Node.js is a platform built on Chrome's JavaScript runtime for

easily building fast, scalable network applications. Node.js uses an

event-driven, non-blocking I/O model that makes it lightweight

and efficient, perfect for data-intensive real-time applications that

run across distributed devices.

Thanks

What is Node Js?

Node.js is server side program that is based on v8 JavaScript

engine.

Node.js is designed to write scalable Internet applications.

Node.js programs are written in server side JavaScript.

Node JS contains a built-in http server. This http server can be

control using server side JavaScript.

Using this can develop simple client-server based web application also.

Introduction : How its work?

On Special Demand : If the fast food joint followed a traditional thread-based model, you'd order your food and wait in line until you received it. The person behind you wouldn't be able to order until your order was done. In an event-driven model, you order your food and then get out of line to wait. Everyone else is then free to order.

Why Node Js?

Node.js is well suited for applications that have a lot of concurrent

connections and each request only needs very few CPU cycles, because the

event loop (with all the other clients) is blocked during execution of a function.

If server side application code requires very less cpu cycle. In other world

application are doing non blocking operation and does not have heavy

algorithm or Job which consumes lots of CPU cycle. then you can use Node Js.

If you are Java Script programmer and comfortable in writing Single

Threaded code just like client side JS.

Node JS can be use to serve client site scripts as  css,javascript,images etc.

Using this web server load will be reduce hence get high performance

application.

Begin with Node Js?

var http = require("http"); //Modules (already build libraries)

http.createServer(function(request, response) {

response.writeHeader(200, {"Content-Type": "text/plain"});

response.write("Hello Team from Node.Js!!! Now believed, He can…");

response.end();

}).listen(7777); //It can be anything. But shouldn’t be already on IIS

//Make a call for define port using localhost in your web browser.

Browser > localhost:7777

Node js vs SignalR

Node Js (*) This is a server side software

system. Programs are written on the

server side in JS. This is a packaged compilation of

G. v8 engine, core lib written in JS Using Modules & JS. Need to write code for specific

call. Supported OS : Mac, Linux,

Solaris, Windows*

SignalR (Microsoft) This is a server side software

system. Programs are written on the

server side in C#. SignalR is a library for Asp. Net

(auto. best transport given the clients )

Using Hub & Persistent Conn. Provide hooks for connected.

Supported OS : Cool

Making Believable

1. Bottom Level (Fresher’s program )

2. Middle Level (Push type notification)

3. Top Level (Live video streaming with mobile cam)

Thank you!