github.com/krum110487/go-htaccess@v0.0.0-20240316004156-60641c8e7598/tests/data/apache_2_2_34/manual/mod/mod_disk_cache.html.en (about) 1 <?xml version="1.0" encoding="ISO-8859-1"?> 2 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> 3 <html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en"><head> 4 <meta content="text/html; charset=ISO-8859-1" http-equiv="Content-Type" /> 5 <!-- 6 XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX 7 This file is generated from xml source: DO NOT EDIT 8 XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX 9 --> 10 <title>mod_disk_cache - Apache HTTP Server Version 2.2</title> 11 <link href="../style/css/manual.css" rel="stylesheet" media="all" type="text/css" title="Main stylesheet" /> 12 <link href="../style/css/manual-loose-100pc.css" rel="alternate stylesheet" media="all" type="text/css" title="No Sidebar - Default font size" /> 13 <link href="../style/css/manual-print.css" rel="stylesheet" media="print" type="text/css" /><link rel="stylesheet" type="text/css" href="../style/css/prettify.css" /> 14 <script src="../style/scripts/prettify.min.js" type="text/javascript"> 15 </script> 16 17 <link href="../images/favicon.ico" rel="shortcut icon" /><link href="http://httpd.apache.org/docs/current/mod/mod_disk_cache.html" rel="canonical" /></head> 18 <body> 19 <div id="page-header"> 20 <p class="menu"><a href="../mod/">Modules</a> | <a href="../mod/directives.html">Directives</a> | <a href="http://wiki.apache.org/httpd/FAQ">FAQ</a> | <a href="../glossary.html">Glossary</a> | <a href="../sitemap.html">Sitemap</a></p> 21 <p class="apache">Apache HTTP Server Version 2.2</p> 22 <img alt="" src="../images/feather.gif" /></div> 23 <div class="up"><a href="./"><img title="<-" alt="<-" src="../images/left.gif" /></a></div> 24 <div id="path"> 25 <a href="http://www.apache.org/">Apache</a> > <a href="http://httpd.apache.org/">HTTP Server</a> > <a href="http://httpd.apache.org/docs/">Documentation</a> > <a href="../">Version 2.2</a> > <a href="./">Modules</a></div> 26 <div id="page-content"> 27 <div class="retired"><h4>Please note</h4> 28 <p> This document refers to a legacy release (<strong>2.2</strong>) of Apache httpd. The active release (<strong>2.4</strong>) is documented <a href="http://httpd.apache.org/docs/current">here</a>. If you have not already upgraded, please follow <a href="http://httpd.apache.org/docs/current/upgrading.html">this link</a> for more information.</p> 29 <p>You may follow <a href="http://httpd.apache.org/docs/current/mod/mod_disk_cache.html">this link</a> to go to the current version of this document.</p></div><div id="preamble"><h1>Apache Module mod_disk_cache</h1> 30 <div class="toplang"> 31 <p><span>Available Languages: </span><a href="../en/mod/mod_disk_cache.html" title="English"> en </a> | 32 <a href="../ja/mod/mod_disk_cache.html" hreflang="ja" rel="alternate" title="Japanese"> ja </a> | 33 <a href="../ko/mod/mod_disk_cache.html" hreflang="ko" rel="alternate" title="Korean"> ko </a></p> 34 </div> 35 <table class="module"><tr><th><a href="module-dict.html#Description">Description:</a></th><td>Content cache storage manager keyed to URIs</td></tr> 36 <tr><th><a href="module-dict.html#Status">Status:</a></th><td>Extension</td></tr> 37 <tr><th><a href="module-dict.html#ModuleIdentifier">Module Identifier:</a></th><td>disk_cache_module</td></tr> 38 <tr><th><a href="module-dict.html#SourceFile">Source File:</a></th><td>mod_disk_cache.c</td></tr></table> 39 <h3>Summary</h3> 40 41 <p><code class="module"><a href="../mod/mod_disk_cache.html">mod_disk_cache</a></code> implements a disk based storage 42 manager. It is primarily of use in conjunction with 43 <code class="module"><a href="../mod/mod_cache.html">mod_cache</a></code>.</p> 44 45 <p>Content is stored in and retrieved from the cache using URI based 46 keys. Content with access protection is not cached.</p> 47 48 <p><code class="program"><a href="../programs/htcacheclean.html">htcacheclean</a></code> can be used to maintain the cache 49 size at a maximum level.</p> 50 51 <div class="note"><h3>Note:</h3> 52 <p><code class="module"><a href="../mod/mod_disk_cache.html">mod_disk_cache</a></code> requires the services of 53 <code class="module"><a href="../mod/mod_cache.html">mod_cache</a></code>.</p> 54 </div> 55 <div class="note"><h3>Note:</h3> 56 <p><code class="module"><a href="../mod/mod_disk_cache.html">mod_disk_cache</a></code> uses the sendfile feature to 57 serve files from the cache when supported by the platform, and 58 when enabled with <code class="directive"><a href="../mod/core.html#enablesendfile">EnableSendfile</a></code>. 59 However, per-directory and .htaccess configuration of 60 <code class="directive"><a href="../mod/core.html#enablesendfile">EnableSendfile</a></code> are ignored by 61 <code class="module"><a href="../mod/mod_disk_cache.html">mod_disk_cache</a></code> as the corresponding settings are not 62 available to the module when a request is being served from the 63 cache.</p> 64 </div> 65 </div> 66 <div id="quickview"><h3 class="directives">Directives</h3> 67 <ul id="toc"> 68 <li><img alt="" src="../images/down.gif" /> <a href="#cachedirlength">CacheDirLength</a></li> 69 <li><img alt="" src="../images/down.gif" /> <a href="#cachedirlevels">CacheDirLevels</a></li> 70 <li><img alt="" src="../images/down.gif" /> <a href="#cachemaxfilesize">CacheMaxFileSize</a></li> 71 <li><img alt="" src="../images/down.gif" /> <a href="#cacheminfilesize">CacheMinFileSize</a></li> 72 <li><img alt="" src="../images/down.gif" /> <a href="#cacheroot">CacheRoot</a></li> 73 </ul> 74 <ul class="seealso"><li><a href="#comments_section">Comments</a></li></ul></div> 75 76 <div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div> 77 <div class="directive-section"><h2><a name="CacheDirLength" id="CacheDirLength">CacheDirLength</a> <a name="cachedirlength" id="cachedirlength">Directive</a></h2> 78 <table class="directive"> 79 <tr><th><a href="directive-dict.html#Description">Description:</a></th><td>The number of characters in subdirectory names</td></tr> 80 <tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>CacheDirLength <var>length</var></code></td></tr> 81 <tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>CacheDirLength 2</code></td></tr> 82 <tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config, virtual host</td></tr> 83 <tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Extension</td></tr> 84 <tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_disk_cache</td></tr> 85 </table> 86 <p>The <code class="directive">CacheDirLength</code> directive sets the number 87 of characters for each subdirectory name in the cache hierarchy.</p> 88 89 <div class="note"> 90 <p>The result of <code class="directive"><a href="#cachedirlevels">CacheDirLevels</a></code>* <code class="directive">CacheDirLength</code> 91 must not be higher than 20.</p> 92 </div> 93 94 <div class="example"><p><code> 95 CacheDirLength 4 96 </code></p></div> 97 98 </div> 99 <div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div> 100 <div class="directive-section"><h2><a name="CacheDirLevels" id="CacheDirLevels">CacheDirLevels</a> <a name="cachedirlevels" id="cachedirlevels">Directive</a></h2> 101 <table class="directive"> 102 <tr><th><a href="directive-dict.html#Description">Description:</a></th><td>The number of levels of subdirectories in the 103 cache.</td></tr> 104 <tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>CacheDirLevels <var>levels</var></code></td></tr> 105 <tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>CacheDirLevels 3</code></td></tr> 106 <tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config, virtual host</td></tr> 107 <tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Extension</td></tr> 108 <tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_disk_cache</td></tr> 109 </table> 110 <p>The <code class="directive">CacheDirLevels</code> directive sets the number 111 of subdirectory levels in the cache. Cached data will be saved this 112 many directory levels below the <code class="directive"><a href="#cacheroot">CacheRoot</a></code> directory.</p> 113 114 <div class="note"> 115 <p>The result of <code class="directive">CacheDirLevels</code>* 116 <code class="directive"><a href="#cachedirlength">CacheDirLength</a></code> must 117 not be higher than 20.</p> 118 </div> 119 120 <div class="example"><p><code> 121 CacheDirLevels 5 122 </code></p></div> 123 124 </div> 125 <div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div> 126 <div class="directive-section"><h2><a name="CacheMaxFileSize" id="CacheMaxFileSize">CacheMaxFileSize</a> <a name="cachemaxfilesize" id="cachemaxfilesize">Directive</a></h2> 127 <table class="directive"> 128 <tr><th><a href="directive-dict.html#Description">Description:</a></th><td>The maximum size (in bytes) of a document to be placed in the 129 cache</td></tr> 130 <tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>CacheMaxFileSize <var>bytes</var></code></td></tr> 131 <tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>CacheMaxFileSize 1000000</code></td></tr> 132 <tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config, virtual host</td></tr> 133 <tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Extension</td></tr> 134 <tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_disk_cache</td></tr> 135 </table> 136 <p>The <code class="directive">CacheMaxFileSize</code> directive sets the 137 maximum size, in bytes, for a document to be considered for storage in 138 the cache.</p> 139 140 <div class="example"><p><code> 141 CacheMaxFileSize 64000 142 </code></p></div> 143 144 </div> 145 <div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div> 146 <div class="directive-section"><h2><a name="CacheMinFileSize" id="CacheMinFileSize">CacheMinFileSize</a> <a name="cacheminfilesize" id="cacheminfilesize">Directive</a></h2> 147 <table class="directive"> 148 <tr><th><a href="directive-dict.html#Description">Description:</a></th><td>The minimum size (in bytes) of a document to be placed in the 149 cache</td></tr> 150 <tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>CacheMinFileSize <var>bytes</var></code></td></tr> 151 <tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>CacheMinFileSize 1</code></td></tr> 152 <tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config, virtual host</td></tr> 153 <tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Extension</td></tr> 154 <tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_disk_cache</td></tr> 155 </table> 156 <p>The <code class="directive">CacheMinFileSize</code> directive sets the 157 minimum size, in bytes, for a document to be considered for storage 158 in the cache.</p> 159 160 <div class="example"><p><code> 161 CacheMinFileSize 64 162 </code></p></div> 163 164 </div> 165 <div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div> 166 <div class="directive-section"><h2><a name="CacheRoot" id="CacheRoot">CacheRoot</a> <a name="cacheroot" id="cacheroot">Directive</a></h2> 167 <table class="directive"> 168 <tr><th><a href="directive-dict.html#Description">Description:</a></th><td>The directory root under which cache files are 169 stored</td></tr> 170 <tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>CacheRoot <var>directory</var></code></td></tr> 171 <tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config, virtual host</td></tr> 172 <tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Extension</td></tr> 173 <tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_disk_cache</td></tr> 174 </table> 175 <p>The <code class="directive">CacheRoot</code> directive defines the name of 176 the directory on the disk to contain cache files. If the <code class="module"><a href="../mod/mod_disk_cache.html">mod_disk_cache</a></code> module has been loaded or compiled in to the 177 Apache server, this directive <em>must</em> be defined. Failing to 178 provide a value for <code class="directive">CacheRoot</code> will result in 179 a configuration file processing error. The <code class="directive"><a href="#cachedirlevels">CacheDirLevels</a></code> and <code class="directive"><a href="#cachedirlength">CacheDirLength</a></code> directives define 180 the structure of the directories under the specified root directory.</p> 181 182 <div class="example"><p><code> 183 CacheRoot c:/cacheroot 184 </code></p></div> 185 186 </div> 187 </div> 188 <div class="bottomlang"> 189 <p><span>Available Languages: </span><a href="../en/mod/mod_disk_cache.html" title="English"> en </a> | 190 <a href="../ja/mod/mod_disk_cache.html" hreflang="ja" rel="alternate" title="Japanese"> ja </a> | 191 <a href="../ko/mod/mod_disk_cache.html" hreflang="ko" rel="alternate" title="Korean"> ko </a></p> 192 </div><div class="top"><a href="#page-header"><img src="../images/up.gif" alt="top" /></a></div><div class="section"><h2><a id="comments_section" name="comments_section">Comments</a></h2><div class="warning"><strong>Notice:</strong><br />This is not a Q&A section. Comments placed here should be pointed towards suggestions on improving the documentation or server, and may be removed again by our moderators if they are either implemented or considered invalid/off-topic. Questions on how to manage the Apache HTTP Server should be directed at either our IRC channel, #httpd, on Freenode, or sent to our <a href="http://httpd.apache.org/lists.html">mailing lists</a>.</div> 193 <script type="text/javascript"><!--//--><![CDATA[//><!-- 194 var comments_shortname = 'httpd'; 195 var comments_identifier = 'http://httpd.apache.org/docs/2.2/mod/mod_disk_cache.html'; 196 (function(w, d) { 197 if (w.location.hostname.toLowerCase() == "httpd.apache.org") { 198 d.write('<div id="comments_thread"><\/div>'); 199 var s = d.createElement('script'); 200 s.type = 'text/javascript'; 201 s.async = true; 202 s.src = 'https://comments.apache.org/show_comments.lua?site=' + comments_shortname + '&page=' + comments_identifier; 203 (d.getElementsByTagName('head')[0] || d.getElementsByTagName('body')[0]).appendChild(s); 204 } 205 else { 206 d.write('<div id="comments_thread">Comments are disabled for this page at the moment.<\/div>'); 207 } 208 })(window, document); 209 //--><!]]></script></div><div id="footer"> 210 <p class="apache">Copyright 2017 The Apache Software Foundation.<br />Licensed under the <a href="http://www.apache.org/licenses/LICENSE-2.0">Apache License, Version 2.0</a>.</p> 211 <p class="menu"><a href="../mod/">Modules</a> | <a href="../mod/directives.html">Directives</a> | <a href="http://wiki.apache.org/httpd/FAQ">FAQ</a> | <a href="../glossary.html">Glossary</a> | <a href="../sitemap.html">Sitemap</a></p></div><script type="text/javascript"><!--//--><![CDATA[//><!-- 212 if (typeof(prettyPrint) !== 'undefined') { 213 prettyPrint(); 214 } 215 //--><!]]></script> 216 </body></html>