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JSCon 2011, arranged by phpXperts. held in American International University Bangladesh.
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NodeJSJS as a Server-side Language
NewsCred
Iraj Islam @irajislam
Nurul Ferdous @ferdous
Saturday, September 17, 2011
Agenda
• Part 1. NodeJS
• Part 2. ExpressJS
• Questions?
NewsCred
Saturday, September 17, 2011
Who We Are NewsCred
Iraj IslamCTO/Co-founder, NewsCred
Nurul FerdousSenior Software Engineer, NewsCred
Saturday, September 17, 2011
Part 1NodeJS
NewsCred
Saturday, September 17, 2011
Server-side JS NewsCred
Saturday, September 17, 2011
What’s NodeJS? NewsCred
NodeJSWhat’s this all about?
Saturday, September 17, 2011
What’s NodeJS? NewsCred
NodeJSEvented I/O for V8 JavaScript.
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What’s NodeJS? NewsCred
Goal“Provide an easy way to build scalable
network programs.”
Saturday, September 17, 2011
History NewsCred
The Evolution of the WebFrom static pages to real time data.
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Why NodeJS? NewsCred
The Age of Big DataExabytes (1018) of data stored per year
0
250
500
750
1000
20062007
20082009
2010
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Why NodeJS? NewsCred
The Fast Food AnalogySynchronous vs. Asynchronous
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Why NodeJS? NewsCred
The Apache SolutionSynchronous I/O
readFile();
Application
MySQL
User FileSystem
getTweets();
writeToDb();
Twitter API
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Why NodeJS? NewsCred
The Apache SolutionBlocking I/O
readFile();
Application
MySQL
User FileSystem
Waiting...
getTweets();
Waiting...
writeToDb();
Twitter API
Saturday, September 17, 2011
Why NodeJS? NewsCred
The NodeJS SolutionAsynchronous I/O
readFile();
Application
MySQL
User FileSystem
getTweets();
writeToDb();
Twitter API
Saturday, September 17, 2011
Why NodeJS? NewsCred
The NodeJS SolutionNon-blocking I/O
readFile();
Application
MySQL
User FileSystem
getTweets();
writeToDb();
Twitter API
Saturday, September 17, 2011
NodeJS Benefits NewsCred
• Fast• Built on top of Google’s V8 JavaScript engine.
• Scalable• Asynchronous, event-driven I/O model yields web scale.
• Programmable• JavaScript API and pluggable module architecture.
Saturday, September 17, 2011
• Serving APIs
• Serving real-time apps
• Serving web apps
• Streaming data
NodeJS Use Cases NewsCred
Saturday, September 17, 2011
NodeJS “Hello World!” NewsCred
var http = require('http');
http.createServer(function (request, response) { response.writeHead(200, {'Content-Type':
'text/plain'}); response.writeHead('Hello World!');}).listen(1337, '127.0.0.1');
Saturday, September 17, 2011
Who’s Using NodeJS? NewsCred
Saturday, September 17, 2011
Installing NodeJS NewsCred
• Installing on Unix
• Installing on Windows• Run http://nodejs.org/dist/v0.5.6/node.exe
Saturday, September 17, 2011
Installing npm NewsCred
• Node Package Manager (npm)
• One line install:• curl http://npmjs.org/install.sh | sudo sh
• Multi-line install:• Get the code from http://github.com/isaacs/npm
• Do what the REAMME says
Saturday, September 17, 2011
Part 2ExpressJS
NewsCred
Saturday, September 17, 2011
What’s ExpressJS? NewsCred
ExpressJSHigh-performance NodeJS
web framework.
Saturday, September 17, 2011
Why ExpressJS? NewsCred
• Full blown feature set• Routing
• View rendering/templating
• Sessions
• Good documentation• Lots of examples
• Many extensions
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Installing ExpressJS NewsCred
Saturday, September 17, 2011
Directory Structure NewsCred
Saturday, September 17, 2011
Configuration NewsCred
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Application Settings NewsCred
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Routing NewsCred
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View Rendering NewsCred
• Haml templates• Haml
• Jade
• Embedded JavaScript (EJS) templates
• Coffeekup templates• Uses CoffeeScript
• jQuery templates
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Views with Jade NewsCred
Saturday, September 17, 2011
Sessions NewsCred
• Currently cookie-based• Data store can be Redis, memory etc.
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Packages NewsCred
$ npm install -d # for installing dependancies
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Resources NewsCred
• NodeJS• http://nodejs.org
• http://github.com/dynamicguy/node-mongo-cms
• ExpressJS• http://expressjs.com
• Sencha Connect• http://github.com/senchalabs/connect/wiki
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Questions? NewsCred
Iraj [email protected], @irajislam
Nurul [email protected], @ferdous
Saturday, September 17, 2011
