Introduction to Node.js
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Patrick Heneise @PatrickHeneise An Introduction { 9. . 2012
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node.js is the new star in server side programming. Asynchronous, non-blocking and incredibly fast. In the talk we will cover the topics from installation to Hello World. Topics: Installation Introduction to node.js What makes it different? The Server Framework The REPL Hello World Who is Patrick Heneise? Patrick is the Founder & CEO of desentia. He achieved a MSc in Media Technology and BSc in Computer Science in Media. Ever since he has improved social interaction and media with creative and professional technology solutions. He started his first business in 2006 during his studies in the fields of eLearning and web technologies and worked for various companies and universities in eCommerce, telecommunications and research & development
Transcript of Introduction to Node.js
Patrick Heneise@PatrickHeneise
An Introduction {9. . 2012
What is node.js?
“Node.js is a server side software system designed for writing scalable Internet applications, notably web servers. Programs are written on the server side in JavaScript, using event-driven, asynchronous I/O to minimize overhead and maximize scalability.” - http://en.wikipedia.org/wiki/Nodejs
Server Side Software SystemYet Another Web Framework
event-driven, asynchronous I/O for V8
Traditional Multithreadingwith Apache
Concurrent Connections
0
10
20
30
40
0 500 1000 1500 2000 2500 3000 3500 4000
Mem
ory
in M
B
http://blog.webfaction.com/2008/12/a-little-holiday-present-10000-reqssec-with-nginx-2/
Apache Nginx
The Pizza Example
Event Loop
JavaScript
[...] if you work on the web, love it or hate it, you’re going to have to work with JavaScript at some point.
Installation
brew install node
Hello World!
var http = require('http');http.createServer(function (req, res) { res.writeHead(200, {'Content-Type': 'text/plain'}); res.end('Hello World\n');}).listen(1337, '127.0.0.1');console.log('Server running at http://127.0.0.1:1337/');
Twitter Demo
What is node.js?
Basic theory
Installation
Hello World
Twitter World
npm - the node package manager
Number of Modulesnpm vs. gem vs. pip
0
7500
15000
22500
30000
11/09/2012
NPM Ruby Gems pip
Node Deployment
Helicopters! Flying robots & node.jshttp://nodecopter.com
Extremely fast operations
V8 Runtime
Rapidly growing ecosystem
Super easy deployment, free developer services
JavaScript
Summary
More...
http://nodemanual.org/0.8.14/nodejs_dev_guide/index.html
http://nodestack.org/videos
http://net.tutsplus.com/tutorials/javascript-ajax/this-time-youll-learn-node-js
http://www.youtube.com/user/lxjs2012
http://www.meetup.com/nodejs-bcn/
https://github.com/PatrickHeneise/nodejsbcn-bcnstartupmap
Q&A
Thanks
