How to node!

•Javascript on the server

•Asynchronous and non-blocking code

•Event driven

•Scalable real-time applications

What is Node?

•NGINX

•Tornado

•Thin

Existing solutions

Node v/s PHP

PHPPHP NodeNode

"Hello World" Simple html file

3177.27 5579.30

"File Read" Textfile of 100KB

20.31 47.21

"Read Remote File"Read a remote page and deliver

3.21 6.43

Node v/s the rest

Tested under Ubuntu using a Intel Core 2 Duo,2.53 GHz, 4 GB memory, Approximately 100 byte response for each

Node v/s the rest

Same environement. Variables : Fixed concurrency of 300, size of response

•Runs on Google’s V8 Engine

Javascript on the Server?

•Request is processed sequentially

•Queued requests

Conventional Server

•Concurrent execution

•Non-blocking code

•Scalable

Asynchronous Server

How does Node do it all?

Node Server//Node

http = require('http');

http.createServer(function(request, response){

   response.writeHead(200);

  response.write('Hello World');

 response.end();

}).listen(8000);

Event Driven//JSwindow.onload = function(){    document.body.innerHTML = 'Hello World';};

//Node

http = require('http');

http.createServer(function(request, response){

     response.writeHead(200);

     response.write('Hello World');

     response.end();

}).listen(8000);

Examples

Real World Real Time App

•Hummingbird

•Wheat

•Multi player games

•Real time push notifications

Extend Node

•NPM

•Socket.io

•Now

•Express.js

•Why to Node?

•When to Node?

•When not to?

How to Node?

•http://nodejs.org

•http://npmjs.org

•http://howtonode.org

•http://github.com/joyent/node

Resources

Thanks

Arjun Raj

(http://athousandnodes.com | @athousandnodes)