diff options
Diffstat (limited to 'user_guide/general/caching.html')
| -rw-r--r-- | user_guide/general/caching.html | 115 |
1 files changed, 0 insertions, 115 deletions
diff --git a/user_guide/general/caching.html b/user_guide/general/caching.html deleted file mode 100644 index ae22e75a5..000000000 --- a/user_guide/general/caching.html +++ /dev/null @@ -1,115 +0,0 @@ -<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> -<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> -<head> - -<meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> -<title>Web Page Caching : CodeIgniter User Guide</title> - -<style type='text/css' media='all'>@import url('../userguide.css');</style> -<link rel='stylesheet' type='text/css' media='all' href='../userguide.css' /> - -<script type="text/javascript" src="../nav/nav.js"></script> -<script type="text/javascript" src="../nav/prototype.lite.js"></script> -<script type="text/javascript" src="../nav/moo.fx.js"></script> -<script type="text/javascript" src="../nav/user_guide_menu.js"></script> - -<meta http-equiv='expires' content='-1' /> -<meta http-equiv= 'pragma' content='no-cache' /> -<meta name='robots' content='all' /> -<meta name='author' content='ExpressionEngine Dev Team' /> -<meta name='description' content='CodeIgniter User Guide' /> - -</head> -<body> - -<!-- START NAVIGATION --> -<div id="nav"><div id="nav_inner"><script type="text/javascript">create_menu('../');</script></div></div> -<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div> -<div id="masthead"> -<table cellpadding="0" cellspacing="0" border="0" style="width:100%"> -<tr> -<td><h1>CodeIgniter User Guide Version 2.1.2</h1></td> -<td id="breadcrumb_right"><a href="../toc.html">Table of Contents Page</a></td> -</tr> -</table> -</div> -<!-- END NAVIGATION --> - - -<!-- START BREADCRUMB --> -<table cellpadding="0" cellspacing="0" border="0" style="width:100%"> -<tr> -<td id="breadcrumb"> -<a href="http://codeigniter.com/">CodeIgniter Home</a> › -<a href="../index.html">User Guide Home</a> › -Page Caching -</td> -<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 <input type="text" class="input" style="width:200px;" name="q" id="q" size="31" maxlength="255" value="" /> <input type="submit" class="submit" name="sa" value="Go" /></form></td> -</tr> -</table> -<!-- END BREADCRUMB --> - -<br clear="all" /> - - -<!-- START CONTENT --> -<div id="content"> - - -<h1>Web Page Caching</h1> - -<p>CodeIgniter lets you cache your pages in order to achieve maximum performance.</p> - -<p>Although CodeIgniter is quite fast, the amount of dynamic information you display in your pages will correlate directly to the -server resources, memory, and processing cycles utilized, which affect your page load speeds. -By caching your pages, since they are saved in their fully rendered state, you can achieve performance that nears that of static web pages.</p> - - -<h2>How Does Caching Work?</h2> - -<p>Caching can be enabled on a per-page basis, and you can set the length of time that a page should remain cached before being refreshed. -When a page is loaded for the first time, the cache file will be written to your <dfn>application/cache</dfn> folder. On subsequent page loads the cache file will be retrieved -and sent to the requesting user's browser. If it has expired, it will be deleted and refreshed before being sent to the browser.</p> - -<p>Note: The Benchmark tag is not cached so you can still view your page load speed when caching is enabled.</p> - -<h2>Enabling Caching</h2> - -<p>To enable caching, put the following tag in any of your controller functions:</p> - -<code>$this->output->cache(<var>n</var>);</code> - -<p>Where <var>n</var> is the number of <strong>minutes</strong> you wish the page to remain cached between refreshes.</p> - -<p>The above tag can go anywhere within a function. It is not affected by the order that it appears, so place it wherever it seems -most logical to you. Once the tag is in place, your pages will begin being cached.</p> - -<p class="important"><strong>Warning:</strong> Because of the way CodeIgniter stores content for output, caching will only work if you are generating display for your controller with a <a href="./views.html">view</a>.</p> -<p class="important"><strong>Note:</strong> Before the cache files can be written you must set the file permissions on your -<dfn>application/cache</dfn> folder such that it is writable.</p> - -<h2>Deleting Caches</h2> - -<p>If you no longer wish to cache a file you can remove the caching tag and it will no longer be refreshed when it expires. Note: -Removing the tag will not delete the cache immediately. It will have to expire normally. If you need to remove it earlier you -will need to manually delete it from your cache folder.</p> - - - -</div> -<!-- END CONTENT --> - - -<div id="footer"> -<p> -Previous Topic: <a href="errors.html">Error Handling</a> - · -<a href="#top">Top of Page</a> · -<a href="../index.html">User Guide Home</a> · -Next Topic: <a href="profiling.html">Profiling Your Application</a> -</p> -<p><a href="http://codeigniter.com">CodeIgniter</a> · Copyright © 2006 - 2012 · <a href="http://ellislab.com/">EllisLab, Inc.</a></p> -</div> - -</body> -</html>
\ No newline at end of file |