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<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Node.js - en introduksjon</title>
<meta name="author" content="Ditt navn her">
<meta name="apple-mobile-web-app-capable" content="yes" />
<meta name="apple-mobile-web-app-status-bar-style" content="black-translucent" />
<link rel="stylesheet" href="reveal/css/reveal.min.css">
<link rel="stylesheet" href="reveal/css/theme/beige.css" id="theme">
<!-- For syntax highlighting -->
<link rel="stylesheet" href="/reveal/lib/css/zenburn.css">
<link rel="stylesheet" href="reveal/css/test.css">
<!-- If the query includes 'print-pdf', use the PDF print sheet -->
<script>
document.write( '<link rel="stylesheet" href="reveal/css/print/' + ( window.location.search.match( /print-pdf/gi ) ? 'pdf' : 'paper' ) + '.css" type="text/css" media="print">' );
</script>
<!--[if lt IE 9]>
<script src="reveal/lib/js/html5shiv.js"></script>
<![endif]-->
<style type="text/css">
.no-uppercase {text-transform: none !important;}
</style>
</head>
<body>
<div class="reveal">
<!-- Any section element inside of this container is displayed as a slide -->
<div class="slides">
<section data-state="bouvet-slide">
<img src="./img/nodejs.jpg">
<p>Svein Arild Myhrer / Bouvet Arendal</p>
</section>
<section data-state="bouvet-slide" data-transition="none">
<div>
<img src="./img/guru.jpg">
</div>
</section>
<section data-state="bouvet-slide" data-transition="none">
<div>
<img src="./img/enthusiast.jpg">
</div>
</section>
<section data-state="bouvet-slide" data-transition="none">
<div>
<img src="./img/ryandahl.jpg">
<p>Ryan Dahl</p>
<h2 class="fragment">"I/O has to be done differently"</h2>
</div>
</section>
<section data-state="bouvet-slide" data-transition="none">
<div>
<img src="./img/memory_usage.png">
</div>
</section>
<section data-state="bouvet-slide" data-transition="none">
<div>
<h2>The notion of non-blocking I/O</h2>
<ul>
<li class="fragment">Single threaded</li>
<li class="fragment">Event driven</li>
<li class="fragment">Event loop</li>
</ul>
</div>
</section>
<section data-state="bouvet-slide" data-transition="none">
<div>
<div class="">
<h3>Blocking I/O</h3>
<pre><code>var result = db.query('select..');
//ZZZZZZZzzzZZ
processResult(result);
doOtherOperation();
</code></pre>
</div>
<div class="fragment">
<h3>Non-blocking I/O</h3>
<pre><code>db.query('select..', function(result){
//do something with result
});
doOtherOperation();
</code></pre>
</div>
</div>
</section>
<section data-state="bouvet-slide" data-transition="none">
<div>
<img src="./img/javascript.jpg">
<p>JavaScript? Why?</p>
</div>
</section>
<section data-state="bouvet-slide" data-transition="none">
<div>
<img src="./img/nodejs.jpg">
<p>"To provide a purely evented, non-blocking infrastructure to script highly concurrent programs"</p>
</div>
</section>
<section data-state="bouvet-slide" data-transition="none">
<div>
<img src="./img/nodejs-small.png">
<h2>Design goals</h2>
<ul>
<li class="fragment">Use of callbacks for all I/O</li>
<li class="fragment">Support for the most important network protocols; TCP, DNS, HTTP</li>
<li class="fragment">Familiar for client side JS-programmers and old school Unix-hackers (POSIX)</li>
<li class="fragment">Platform independent</li>
</ul>
</div>
</section>
<section data-state="bouvet-slide" data-transition="none">
<div>
<img width="400px" src="./img/node-architecture.png">
<p>"A bunch of c libraries hacked together"</p>
</div>
</section>
<section data-state="bouvet-slide" data-transition="none">
<div>
<img src="./img/attention.jpg">
</div>
</section>
<section data-state="bouvet-slide" data-transition="none">
<div>
<img style="border: 1px solid black !important" src="./img/npm.png">
<p>http://npmjs.org/</p>
</div>
</section>
<section data-state="bouvet-slide" data-transition="none">
<div>
<img width="700" src="./img/npmstats.png">
</div>
</section>
<section data-state="bouvet-slide" data-transition="none">
<div>
<p>helloworld/package.json</p>
<pre><code>
{
"name": "helloworld",
"version": "0.0.0",
"description": "hello world node module",
"main": "index.js",
"dependencies": {
"underscore": "1.7.0"
},
"author": "Svein Arild Myhrer",
"license": "ISC"
}
</code></pre>
<pre><code>
>> npm install
</code></pre>
<pre><code>
>> npm -g install
</code></pre>
</div>
</section>
<section data-state="bouvet-slide" data-transition="none">
<div>
<p>helloworld/index.js</p>
<pre><code>
function helloWorld(){
console.log("Hello world")
}
module.exports = helloWorld;
</code></pre>
</div>
</section>
<section data-state="bouvet-slide" data-transition="none">
<div>
<p>some-other-module.js</p>
<pre><code>
var hw = require('helloworld');
hw();
</code></pre>
</div>
</section>
<section data-state="bouvet-slide" data-transition="none">
<div>
<p>Valid node.js package</p>
<pre><code>
<package-name>
- package.json
- index.js
</code></pre>
</div>
</section>
<section data-state="bouvet-slide" data-transition="none">
<div>
<h2>Streams</h2>
<img style="border: 1px solid black !important" src="./img/stream.jpg">
</div>
</section>
<section data-state="bouvet-slide" data-transition="none">
<div>
<h2>Unix pipes : Node.js Streams</h2>
<pre><code>
>> ls -al | sort -r -k 5 | head -10
</code></pre>
</div>
</section>
<section data-state="bouvet-slide" data-transition="none">
<div>
<h2>Streams</h2>
<img width="700" src="./img/stream-read-write.png">
<p>(read, write, duplex, transform, passthrough)</p>
</div>
</section>
<section data-state="bouvet-slide" data-transition="none">
<div>
<h2>Stream example</h2>
<pre><code>
var fs = require('fs');
var zlib = require('zlib');
var r = fs.createReadStream('file.txt');
var z = zlib.createGzip();
var w = fs.createWriteStream('file.txt.gz');
r.pipe(z).pipe(w);
</code></pre>
</div>
</section>
<section data-state="bouvet-slide" data-transition="none">
<div>
<img width="700" src="./img/whatelse.jpg">
<p>What Else Is There?</p>
</div>
</section>
<section data-state="bouvet-slide" data-transition="none">
<div>
<h2>HTTP hello world</h2>
<pre><code>
var http = require('http');
var server = http.createServer(function (request, response) {
response.writeHead(200, {"Content-Type": "text/plain"});
response.end("Hello World\n");
});
server.listen(8000);
</code></pre>
<h2>TCP hello world</h2>
<pre><code>
var net = require('net');
var server = net.createServer(function (socket) {
socket.end("Hello World\n");
});
server.listen(7000, "localhost");
</code></pre>
</div>
</section>
<section data-state="bouvet-slide" data-transition="none">
<div>
<h2>Web application frameworks</h2>
<ul>
<li>Connect</li>
<li>Express</li>
<li>Hapi</li>
<li>Restify</li>
<li>Meteor</li>
<li>.... +++</li>
</ul>
</div>
</section>
<section data-state="bouvet-slide" data-transition="none">
<div>
<h2>Frontend development tools</h2>
<p style="color: grey">css preprocessors, css minification and concatination, javascript minification and concationation, linting, test runners, reporters, etc.</p>
<div class="fragment">
<img width="300px" style="float: left" src="./img/grunt-logo.png">
<img width="535px" style="float: right" src="./img/gulp-js.jpg">
</div>
<div class="fragment">
<img src="./img/yeoman-logo.png">
</div>
</div>
</section>
<section data-state="bouvet-slide" data-transition="none">
<div>
<img src="./img/tessel-logo.png">
<p class="fragment">A microcontroller that runs JavaScript</p>
<p class="fragment">and is Node.js compatible</p>
</div>
</section>
<section data-state="bouvet-slide" data-transition="none">
<div>
<img src="./img/tessel-card.jpg">
<p class="">https://tessel.io</p>
</div>
</section>
<section data-state="bouvet-slide" data-transition="none">
<div>
<img src="./img/tessel-modules.png">
<p class="">https://tessel.io</p>
</div>
</section>
<section data-state="bouvet-slide" data-transition="none">
<div>
<h2>Node.js in the Enterprise</h2>
<img width="500px" class="fragment" src="./img/paypal.png">
<img width="400px" class="fragment" src="./img/walmart.jpg">
<img class="fragment" src="./img/yahoo.jpg">
<img width="200px" class="fragment" src="./img/linkedin.png">
<img class="fragment" src="./img/groupon.jpg">
</div>
</section>
<section data-state="bouvet-slide" data-transition="none">
<div>
<div class="">
<h2>How to Node?</h2>
<ul>
<li>http://nodejs.org/</li>
<li>http://nodeschools.io</li>
<li>books</li>
<li>jfgi</li>
</ul>
</div>
<br>
<div class="fragment">
<h2>How to serve Node?</h2>
<ul>
<li>Windows Azure</li>
<li>Nodejitsu</li>
<li>Heroku</li>
<li>VPS providers</li>
<li>+++</li>
</ul>
</div>
</section>
<section data-state="bouvet-slide" data-transition="none">
<div>
<p>?</p>
</div>
</section>
<section data-state="bouvet-slide">
<h2>Takk for meg</h2>
</section>
</div>
</div>
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