Gitiles
Code Review Sign In
www.giggi.me / code-igniter-v3-giggi / 4b7d19d373236d84a493b3b99eccf2f1f71f735b / . / user_guide / overview / goals.html
blob: a596cab53667024d7faa299708377853b416ffd4 [file] [log] [blame]
adminb0dd10f2006-08-25 17:25:49 +0000[diff] [blame]1<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
2<html>
3<head>
4
Derek Allardd2df9bc2007-04-15 17:41:17 +0000[diff] [blame]5<title>CodeIgniter User Guide</title>
adminb0dd10f2006-08-25 17:25:49 +0000[diff] [blame]6
7<style type='text/css' media='all'>@import url('../userguide.css');</style>
8<link rel='stylesheet' type='text/css' media='all' href='../userguide.css' />
9
admin17a890d2006-09-27 20:42:42 +0000[diff] [blame]10<script type="text/javascript" src="../nav/nav.js"></script>
admin2296fc32006-09-27 21:07:02 +0000[diff] [blame]11<script type="text/javascript" src="../nav/prototype.lite.js"></script>
admin17a890d2006-09-27 20:42:42 +0000[diff] [blame]12<script type="text/javascript" src="../nav/moo.fx.js"></script>
adminb0dd10f2006-08-25 17:25:49 +0000[diff] [blame]13<script type="text/javascript">
14window.onload = function() {
admine334c472006-10-21 19:44:22 +0000[diff] [blame]15 myHeight = new fx.Height('nav', {duration: 400});
adminb0dd10f2006-08-25 17:25:49 +0000[diff] [blame]16 myHeight.hide();
17}
18</script>
19
20<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
21<meta http-equiv='expires' content='-1' />
22<meta http-equiv= 'pragma' content='no-cache' />
23<meta name='robots' content='all' />
24<meta name='author' content='Rick Ellis' />
Derek Allardd2df9bc2007-04-15 17:41:17 +0000[diff] [blame]25<meta name='description' content='CodeIgniter User Guide' />
adminb0dd10f2006-08-25 17:25:49 +0000[diff] [blame]26
27</head>
28<body>
29
30<!-- START NAVIGATION -->
31<div id="nav"><div id="nav_inner"><script type="text/javascript">create_menu('../');</script></div></div>
32<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle.jpg" width="153" height="44" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
33<div id="masthead">
34<table cellpadding="0" cellspacing="0" border="0" style="width:100%">
35<tr>
Derek Allardd2df9bc2007-04-15 17:41:17 +0000[diff] [blame]36<td><h1>CodeIgniter User Guide Version 1.5.3</h1></td>
adminc0d5d522006-10-30 19:40:35 +0000[diff] [blame]37<td id="breadcrumb_right"><a href="../toc.html">Table of Contents Page</a></td>
adminb0dd10f2006-08-25 17:25:49 +0000[diff] [blame]38</tr>
39</table>
40</div>
41<!-- END NAVIGATION -->
42
43
44<!-- START BREADCRUMB -->
45<table cellpadding="0" cellspacing="0" border="0" style="width:100%">
46<tr>
47<td id="breadcrumb">
Derek Allardd2df9bc2007-04-15 17:41:17 +0000[diff] [blame]48<a href="http://www.codeigniter.com/">CodeIgniter Home</a> &nbsp;&#8250;&nbsp;
adminb0dd10f2006-08-25 17:25:49 +0000[diff] [blame]49<a href="../index.html">User Guide Home</a> &nbsp;&#8250;&nbsp;
50Goals
51</td>
Derek Allardbc030912007-06-24 18:25:29 +0000[diff] [blame]52<td id="searchbox"><form method="get" action="http://www.google.com/search"><input type="hidden" name="as_sitesearch" id="as_sitesearch" value="codeigniter.com/user_guide/" />Search User Guide&nbsp; <input type="text" class="input" style="width:200px;" name="q" id="q" size="31" maxlength="255" value="" />&nbsp;<input type="submit" class="submit" name="sa" value="Go" /></form></td>
adminb0dd10f2006-08-25 17:25:49 +0000[diff] [blame]53</tr>
54</table>
55<!-- END BREADCRUMB -->
56
57<br clear="all" />
58
59
60<!-- START CONTENT -->
61<div id="content">
62
63
64
65<h2>Design and Architectural Goals</h2>
66
Derek Allardd2df9bc2007-04-15 17:41:17 +0000[diff] [blame]67<p>Our goal for CodeIgniter is <dfn>maximum performance, capability, and flexibility in the smallest, lightest possible package</dfn>.</p>
adminb0dd10f2006-08-25 17:25:49 +0000[diff] [blame]68
admine334c472006-10-21 19:44:22 +0000[diff] [blame]69<p>To meet this goal we are committed to benchmarking, re-factoring, and simplifying at every step of the development process,
adminb0dd10f2006-08-25 17:25:49 +0000[diff] [blame]70rejecting anything that doesn't further the stated objective.</p>
71
Derek Allardd2df9bc2007-04-15 17:41:17 +0000[diff] [blame]72<p>From an technical and architectural standpoint, CodeIgniter was created with the following objectives:</p>
adminb0dd10f2006-08-25 17:25:49 +0000[diff] [blame]73
74<ul>
Derek Allardd2df9bc2007-04-15 17:41:17 +0000[diff] [blame]75<li><strong>Dynamic Instantiation.</strong> In CodeIgniter, components are loaded and routines executed only when requested, rather than globally. No assumptions are made by the system regarding what may be needed beyond the minimal core resources, so the system is very light-weight by default. The events, as triggered by the HTTP request, and the controllers and views you design will determine what is invoked.</li>
adminb0dd10f2006-08-25 17:25:49 +0000[diff] [blame]76<li><strong>Loose Coupling.</strong> Coupling is the degree to which components of a system rely on each other. The less components depend on each other the more reusable and flexible the system becomes. Our goal was a very loosely coupled system.</li>
Derek Allardd2df9bc2007-04-15 17:41:17 +0000[diff] [blame]77<li><strong>Component Singularity.</strong> Singularity is the degree to which components have a narrowly focused purpose. In CodeIgniter, each class and its functions are highly autonomous in order to allow maximum usefulness.</li>
adminb0dd10f2006-08-25 17:25:49 +0000[diff] [blame]78</ul>
79
Derek Allardd2df9bc2007-04-15 17:41:17 +0000[diff] [blame]80<p>CodeIgniter is a dynamically instantiated, loosely coupled system with high component singularity. It strives for simplicity, flexibility, and high performance in a small footprint package.</p>
adminb0dd10f2006-08-25 17:25:49 +0000[diff] [blame]81
82
83
84
85
86
87</div>
88<!-- END CONTENT -->
89
90
91<div id="footer">
92<p>
93Previous Topic:&nbsp;&nbsp;<a href="mvc.html">Model-View-Controller</a>
94&nbsp;&nbsp;&nbsp;&middot;&nbsp;&nbsp;
95<a href="#top">Top of Page</a>&nbsp;&nbsp;&nbsp;&middot;&nbsp;&nbsp;
96<a href="../index.html">User Guide Home</a>&nbsp;&nbsp;&nbsp;&middot;&nbsp;&nbsp;
97Next Topic:&nbsp;&nbsp;<a href="../general/index.html">Getting Started</a>
Derek Allardc6441282007-07-04 23:54:32 +0000[diff] [blame]98</p>
Derek Allardd2df9bc2007-04-15 17:41:17 +0000[diff] [blame]99<p><a href="http://www.codeigniter.com">CodeIgniter</a> &nbsp;&middot;&nbsp; Copyright &#169; 2007 &nbsp;&middot;&nbsp; <a href="http://ellislab.com/">Ellislab, Inc.</a></p>
adminb0dd10f2006-08-25 17:25:49 +0000[diff] [blame]100</div>
101
102</body>
103</html>