This document introduces Node.js, a platform for building scalable server-side web applications using JavaScript. It provides a brief history of Node.js, describes its key features like non-blocking I/O and the V8 JavaScript engine. Examples are given for building HTTP servers and clients. Common modules for file system access, child processes and more are demonstrated. The performance of Node.js is highlighted for building real-time applications that handle many concurrent connections with few system resources.

1. Server-Side JavaScript
Developement
Node.JS Quick Tour
q3boy <q3boy1@gmail.com>
from http://cnodejs.org/

2. Server-Side JavaScript
Development

3. Aptana Jaxer (SpiderMonkey)
Helma (Rhino)

4. •
•

5. Revelutions in 2009
• CommonJS (ServerJS), by Dangoor
• JSConf, by Chris Williams & Iterative Designs
• Node, by Ray Dahl.

6. Node's goal is to provide an easy
way to build scalable network
programs
-- nodejs.org

7. Ray Dahl

8. • 1/5/2009 Ryah Dahl
• 2/15/2009
• 5/31/2009
• ......
• 11/16/2010 v0.3.1

9. • wiki 600 module
• 20
•

10. • libev (event loop)
• libeio (nonblocked posix, thread pool)
• v8 (javascript engine by google)

11. •
•
•

12. io
io

13. io
io

14. -
•
•
•

15. -
• cpu
•

16. - Web Worker

17. • AMD Opteron 2200 , 4G RAM
• socket client 20,000+ qps
• socket server 17,000 qps
• http server 4,400 qps
• 30~40m
• see more. <http://nodejs.kongwu.net/blog/?
p=8>

18. • SSL
• Windows
• 1G (by v8)

19. • Web
•
• Spider

20. Digg in the node

21. $ git clone git://github.com/ry/node.git
$ cd node
$ ./configure --prefix=$HOME/node
$ make install

22. Hello World!
Familiar & Simple

23. $ node singleThread.js
1
2
3
4

24. CommonJS
$ node CommonJS.js
foobar

25. io
$ node nonblocking.js
Reading my.txt ...
my.txt
Here is contents in "my.txt".

26. HTTP

27. TCP
$ node tcpServer.js &
$ telnet locahost 1234
Welcome!
> Node is so Cooool.
Node is so Cooool.
>

28. $ node watchFile.js &
$ sleep 3; touch my.txt
the current mtime is: 1292594780000
the previous mtime was: 1292594752000

29. $ node childProcess.js
hello
world

30. String vs Buffer
String
•
• node v8 String ,
socket memcopy
• v8 gc

31. String vs Buffer
With String

32. String vs Buffer
With Buffer

33. With String

34. With Buffer

35. Want to see more?

36. • PHP: pear
• Python: PyPI, setuptools
• Ruby: Gems
• Node:

37. $ cat >>~/.npmrc <<NPMRC
root = ~/.node_libraries
binroot = ~/bin
manroot = ~/share/man
NPMRC
$ curl http://npmjs.org/install.sh | sh
$ npm ls
$ npm install package_name
$ npm update

38. IDE base on node
http://www.cloud9ide.com/

39. Links
• http://www.commonjs.org/
• http://nodejs.org/
• http://howtonode.org/
• https://github.com/ry/node/wiki
• https://github.com/ry/node/wiki/modules
• https://github.com/isaacs/npm

41. Node in Taobao
• UED
• nodejs-kissy by <bachi@taobao.com>
• EDP
• http://cnodejs.org/ ( node , coming
soon)
• node-reverse-proxy ( , , coming
soon)
• node-myfox (mysql 2011 Q1)
• node-glider ( 2011 Q2)
• node-kvproxy (key-value 2011 Q2)