1. An Introduction
9. . 2012
{
Patrick Heneise
@PatrickHeneise

2. 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

3. Server Side Software System
Yet Another Web Framework

4. event-driven, asynchronous I/O for V8

5. Traditional Multithreading
with Apache

6. Apache Nginx
40
30
Memory in MB
20
10
0
0 500 1000 1500 2000 2500 3000 3500 4000
Concurrent Connections
http://blog.webfaction.com/2008/12/a-little-holiday-present-10000-reqssec-with-nginx-2/

7. The Pizza Example

8. Event Loop

9. JavaScript

10. [...] if you work on the web, love it or hate it, you’re
going to have to work with JavaScript at some point.

11. Installation

12. http://nodejs.org
Hit INSTALL

13. brew install node

14. Hello World!

15. var http = require('http');
http.createServer(function (req, res) {
res.writeHead(200, {'Content-Type': 'text/plain'});
res.end('Hello Worldn');
}).listen(1337, '127.0.0.1');
console.log('Server running at http://127.0.0.1:1337/');

16. Twitter Demo

17. What is node.js?
Basic theory
Installation
Hello World
Twitter World
npm - the node package manager

18. NPM Count
http://npm-count.jit.su

19. NPM Ruby Gems pip
30000
22500
15000
7500
0
11/09/2012
Number of Modules
npm vs. gem vs. pip

20. Node Deployment

21. jitsu deploy
http://nodejitsu.com

22. Helicopters! Flying robots & node.js
http://nodecopter.com

23. Summary
Extremely fast operations
V8 Runtime
Rapidly growing ecosystem
Super easy deployment, free developer services
JavaScript

24. 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

25. Q&A

26. Thanks