Basic intro to Node.js for the first Node.js Calgary meetup on August 4th, 2011.

1. Node.js/Javascript
Calgary Meetup #1

2. What is Node.js?
• A Very Fast Asynchronous Event Driven Server
• Runs On Top of Google’s V8 Javascript Engine
• You Write Server Code In Javascript (Yay!)
• One Of The Fastest Growing Open Source Projects

3. Apps Running On Node.js
• Voxer • Sled.com
• Cloudkick • Pow
• Cloud9 • nodejitsu
• Loggly • Calipso
• Word2
• Bookfriend.me

4. How To Node
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/');
Code from nodejs.org

5. How To Node...
Running The Server
% node example.js
Server running at http://127.0.0.1:1337/
Code from nodejs.org

6. So How Does it Really Work?
(Grocery Store Metaphore)

7. Did I Also Mention It’s Fast?
http://arlolra.no.de/

8. Node Has Modules
Frameworks (And Lots of Them)
Database
• express/connect
• node-mongodb-
native
• bricks
Others Testing • node-cassandra
Templating
• socket.io • expresso
• node-redis
• jade • hook.io • nodeunit
• node-mysql
• ejs • jsdom • vows
• moustache • everyauth • benchmark.js

9. {
Managing Module
"name": "My app"
, "description": "It Does Cool Stuff!"
, "version": "0.0.1"
, "author": {
Dependencies is
"name": "Eric Kryski",
"email": "<nodecalgary@gmail.com>"
}
, "private": "true"
Easy! , "homepage": "http://mydomain.com"
, "main": "./app.js"
, "engines": {"node": "~0.4"}
, "repository": {
• Use npm (node package manager)
}
"type": "git"
"url": "git@github.com/myproject/"
,
• Define your package.json file , "dependencies": {
"express": ">= 2.3.11"
"jade": ">= 0.12.2"
,
• Use npm install to grab all your
, "mongoose": ">= 1.4.0"
, "mongoose-auth": ">= 0.0.10"
modules , "everyauth": ">=0.2.17"
}
, "devDependencies": {
% npm install module_name "expresso": ">= 0.8.0"
}
}

10. Current Status
• Current Stable Version is v0.4.10 (Aug. 4th, 2011)
• Current Not-Stable Version is v0.5.3 (Aug. 4th, 2011)
• Moving to v0.6 in ~4 weeks (Stable Windows Support)
• Moving to v1.0 around end of 2011 (Speedy Windows & Unix Support)

11. Places To Get You Up And Running
• http://nodejs.org/
• http://howtonode.org/
• http://nodetuts.com/
• http://stackoverflow.com/questions/2353818/how-do-i-get-started-
with-nodejs
• http://groups.google.com/group/nodejs
• IRC #node.js on freenode
• I will be blogging at http://blog.erickryski.com