Getting started with developing Nodejs

yet another talk on node.js getting started @philhawksworth

what we’ll look at whaddizit? installation options hello world modules & frameworks deploying & hosting comet and beyond

assumptionsweb development experience javascript knowledge unix, linux, osx not a nodejs ninja

whaddizit?

Evented I/O forV8 Javascript

evented i-what now? c++ v8 javascript engine server-side javascript single event loop non-blocking

useful knowledge strong javascript jQuery patterns

dangerous knowledge jQuery patterns

considerations how mature is it?v0.0.1: early 2009, currently v.0.4.8 who uses it? everyone is playing.

considerations how mature is it?v0.0.1: early 2009, currently v.0.4.8 who uses it? everyone is playing.should I be scared of it? no. but be cautious.

ball-ache: stability rate of change

installation options build from source package ndistro n

from source clone source from github install dependancies xcode toolsconfigure, make, make install

package

ball-ache: stability rate of change

many versionsmany versionsmany versions ndistro & n

ndistronode distribution toolkit

enables manyversions of node

http://github.com/visionmedia/ndistro

local versionsfor each project

install as a module

ball-acheversion stabilitymodule stability

installing modules npmnode package manager

curl http://npmjs.org/install.sh | sh

$ npm install <package>

$ npm install n

$ npm install n@0.4.1

$ npm ls

!"# express@2.2.2$ !"# connect@1.3.0$ $ !"" mime@1.2.1$ $ %"" qs@0.1.0$ !"" mime@1.2.1$ %"" qs@0.1.0!"" n@0.4.1%"" underscore@1.1.6

$ npm update n

$ npm install n

$ npm update npm

while ndistro is for virtualenvironments

while ndistro is for localenvironments

n gives system widenode versioning

$ n 0.2.6$ n v0.3.3

downloadconﬁgure make install

$ n ls

0.2.3 0.2.6 --debug 0.3.4 0.3.5ο 0.4.8

$ n use 0.4.8

hello world

app.js hello world

$ node app.js

$ ./bin/node app.js

$ n use 0.4.8 app.js

frameworks get a little help uri routing content negotiation templatingenvironment conﬁguration

express the canonical webdevelopment framework http://expressjs.com

templatingmany ways to render your response

bootstrapping quick scaffolding

$ express --template --css --session

$ n use 0.4.8 app.js

deployingwhere do I put this thing? self-managed amazon, linode, slicehost managed heroku, no.de

duostack automated, git-based deployment install via npmmanage dependancies via npmlimited versions of nodejs

server.js hello world

$ git init$ git add$ git commit -m ‘1st commit’

$ duostack create nodedemo$ git push duostack master

Delta compression using up to 2 threads.Compressing objects: 100% (2/2), done.Writing objects: 100% (3/3), 416 bytes, done.Total 3 (delta 0), reused 0 (delta 0)==== Duostack deploy received for nodedemo==== Compiling app... done Compressed size is 4.0KB==== Launching first instances.... done==== App successfully deployed to==== http://nodedemo.duostack.net

self-managedamazon, linode, slicehost

deploying get it there git conﬁgure it install dependenciesget it up, and keep it up upstart

$ git clone project.git$ cd project$ ndistro

ndistro is really just the shell

replicates your environment

keeping it up

$ /etc/init.d/

http://upstart.ubuntu.com/

easy comet requests websockets

cometlong-lived http requests

javascript on the client asks, and listensasks again, or takes action

websocketsmore efﬁcient low latency comms

supported inmodern browsers

Graceful degradation

WebSocket Adobe Flash Socket Ajax long pollingAjax multipart streaming Forever Iframe JSONP Polling

but...node is not just for realtime

staying in the loopand ﬁnding out more

github wikigithub.com/joyent/node/wiki

ircirc.freenode.net #node.js

github wiki

@ryah@tjholowaychuk @isaacs @sh1mmer

ta!hawksworx.com@philhawksworth

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Getting started with developing Nodejs

by Phil Hawksworth

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