Node.js is a platform for building server-side applications using JavaScript. It allows JavaScript code to run outside of a browser, using an event-driven, non-blocking I/O model that makes it lightweight and efficient. Node.js applications are written in JavaScript and use callbacks and streams for asynchronous programming. Common uses of Node.js include real-time web applications, IoT applications, REST APIs, and more. The Node.js community is large and active, with many open source modules available on npm.

1. Node.JS
Javascript no lado do Servidor
Mauricio Vieira
Salvador, 28 de abril de 2012

2. Sobre mim
/mauriciovieira
@mauriciovieira
/mbcvieira
http://mauriciovieira.net
Omni ignotum pro magnifico

3. http://linguagil.com.br
Agosto/2012

4. http://nodejs.org

5. JavaScript → código nativo
Objetos em cache
Coletor de lixo stop-the-world
http://code.google.com/p/v8

6. Reactor Pattern
Perl AnyEvent
Python Twisted
Ruby EventMachine
Erlang
Javascript

7. setTimeout(function() {
console.log('World!');
}, 2000);
console.log('Hello');
var fs = require('fs');
fs.stat('/etc/passwd', function(err, stats) {
if (err) {console.log(err.message); return; }
console.log(stats);
//console.log('this file is ' + stats.size + ' bytes
long.');
});

8. The Way of Node
http://bit.ly/A3bObP

9. The Way of Node
1. Node is a platform
timers, process, util, events, Buffer,
Stream, Crypto, TLS/SSL, fs, path,
Net, UDP, dns, HTTP(S), tty, zlib, os.

10. http://commonjs.org

11. 92672795
http://npmjs.org

12. The Way of Node
2. Node is JavaScript
(but JavaScript is not Node)

13. The Way of Node
3. Node is callbacks
& Streams
(standard callback API and Streams)

14. http://socket.io

15. http://faye.jcoglan.com/

16. http://pubsub.io/

17. The Way of Node
4. Node is not pretending
to be blocking when it
is not.

18. The Way of Node
5. Node is not going to
include that module.

19. The Way of Node
6. Node is for building.
(not a science experiment
or academic research)

20. http://expressjs.com/

21. http://geddyjs.org/

22. http://railwayjs.com/

23. http://flatironjs.org/

24. The Way of Node
7. Node is a community.

25. http://mashable.com/2011/03/10/node-js/

26. The Way of Node
8. Node is faster.
(Node is never fast enough)

27. The Way of Node
9. Node is fun.
Obviously!

28. http://nodeknockout.com/

29. Observer Permite
observar o
que os
usuários
fazem em
tempo real !
http://observer.no.de/

30. Eight Bit Beats
Collaborative,
social beat
and melody
sequencer.
http://youtu.be/QmtB9o4HBQU

31. Driv.in Time
brasileiro!
Drive in
virtual :-)
http://driv.in/

32. Doodle or die
Players
create chains
of alternating
drawings and
captions with
hilarious
results.
http://doodleordie.com/

33. ACROnode.com
Criação de
backronimos.
http://driv.in/

34. GPU lava
Usa a
biblioteca
node-webgl
feita durante
as 48 horas
de concurso.
http://minimason.no.de/

35. Chess@HomeProjeto a la
SETI@home
para
destronar o
maior
computador
de Xadrez
http://joshfire.nko2.nodeknockout.com/

36. Mais exemplos

37. https://gomockingbird.com/

38. http://codestre.am

39. Obrigado!
/mauriciovieira
@mauriciovieira
/mbcvieira
http://mauriciovieira.net
Omni ignotum pro magnifico