diff options
Diffstat (limited to 'docs/manual/programs/htcacheclean.html.en')
| -rw-r--r-- | docs/manual/programs/htcacheclean.html.en | 246 |
1 files changed, 246 insertions, 0 deletions
diff --git a/docs/manual/programs/htcacheclean.html.en b/docs/manual/programs/htcacheclean.html.en new file mode 100644 index 0000000..19bbc3f --- /dev/null +++ b/docs/manual/programs/htcacheclean.html.en @@ -0,0 +1,246 @@ +<?xml version="1.0" encoding="ISO-8859-1"?> +<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> +<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en"><head> +<meta content="text/html; charset=ISO-8859-1" http-equiv="Content-Type" /> +<!-- + XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX + This file is generated from xml source: DO NOT EDIT + XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX + --> +<title>htcacheclean - Clean up the disk cache - Apache HTTP Server Version 2.4</title> +<link href="../style/css/manual.css" rel="stylesheet" media="all" type="text/css" title="Main stylesheet" /> +<link href="../style/css/manual-loose-100pc.css" rel="alternate stylesheet" media="all" type="text/css" title="No Sidebar - Default font size" /> +<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" /> +<script src="../style/scripts/prettify.min.js" type="text/javascript"> +</script> + +<link href="../images/favicon.ico" rel="shortcut icon" /></head> +<body id="manual-page"><div id="page-header"> +<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> +<p class="apache">Apache HTTP Server Version 2.4</p> +<img alt="" src="../images/feather.png" /></div> +<div class="up"><a href="./"><img title="<-" alt="<-" src="../images/left.gif" /></a></div> +<div id="path"> +<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 2.4</a> > <a href="./">Programs</a></div><div id="page-content"><div id="preamble"><h1>htcacheclean - Clean up the disk cache</h1> +<div class="toplang"> +<p><span>Available Languages: </span><a href="../en/programs/htcacheclean.html" title="English"> en </a> | +<a href="../fr/programs/htcacheclean.html" hreflang="fr" rel="alternate" title="Français"> fr </a> | +<a href="../ko/programs/htcacheclean.html" hreflang="ko" rel="alternate" title="Korean"> ko </a> | +<a href="../tr/programs/htcacheclean.html" hreflang="tr" rel="alternate" title="Türkçe"> tr </a></p> +</div> + + <p><code>htcacheclean</code> is used to keep the size of + <code class="module"><a href="../mod/mod_cache_disk.html">mod_cache_disk</a></code>'s storage within a given size limit, or + limit on inodes in use. This tool can run either manually or in daemon mode. + When running in daemon mode, it sleeps in the background and checks the cache + directory at regular intervals for cached content to be removed. You can stop + the daemon cleanly by sending it a TERM or INT signal. When run manually, a + once off check of the cache directory is made for cached content to be + removed. If one or more URLs are specified, each URL will be deleted from + the cache, if present.</p> +</div> +<div id="quickview"><a href="https://www.apache.org/foundation/contributing.html" class="badge"><img src="https://www.apache.org/images/SupportApache-small.png" alt="Support Apache!" /></a><ul id="toc"><li><img alt="" src="../images/down.gif" /> <a href="#synopsis">Synopsis</a></li> +<li><img alt="" src="../images/down.gif" /> <a href="#options">Options</a></li> +<li><img alt="" src="../images/down.gif" /> <a href="#delete">Deleting a specific URL</a></li> +<li><img alt="" src="../images/down.gif" /> <a href="#list">Listing URLs in the Cache</a></li> +<li><img alt="" src="../images/down.gif" /> <a href="#exit">Exit Status</a></li> +</ul><h3>See also</h3><ul class="seealso"><li><code class="module"><a href="../mod/mod_cache_disk.html">mod_cache_disk</a></code></li><li><a href="#comments_section">Comments</a></li></ul></div> +<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div> +<div class="section"> +<h2><a name="synopsis" id="synopsis">Synopsis</a></h2> + <p><code><strong>htcacheclean</strong> + [ -<strong>D</strong> ] + [ -<strong>v</strong> ] + [ -<strong>t</strong> ] + [ -<strong>r</strong> ] + [ -<strong>n</strong> ] + [ -<strong>R</strong><var>round</var> ] + -<strong>p</strong><var>path</var> + [-<strong>l</strong><var>limit</var>| + -<strong>L</strong><var>limit</var>]</code></p> + + <p><code><strong>htcacheclean</strong> + [ -<strong>n</strong> ] + [ -<strong>t</strong> ] + [ -<strong>i</strong> ] + [ -<strong>P</strong><var>pidfile</var> ] + [ -<strong>R</strong><var>round</var> ] + -<strong>d</strong><var>interval</var> + -<strong>p</strong><var>path</var> + [-<strong>l</strong><var>limit</var>| + -<strong>L</strong><var>limit</var>]</code></p> + + <p><code><strong>htcacheclean</strong> + [ -<strong>v</strong> ] + [ -<strong>R</strong><var>round</var> ] + -<strong>p</strong><var>path</var> + [ -<strong>a</strong> ] + [ -<strong>A</strong> ]</code></p> + + <p><code><strong>htcacheclean</strong> + [ -<strong>D</strong> ] + [ -<strong>v</strong> ] + [ -<strong>t</strong> ] + [ -<strong>R</strong><var>round</var> ] + -<strong>p</strong><var>path</var> + <var>url</var></code></p> +</div><div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div> +<div class="section"> +<h2><a name="options" id="options">Options</a></h2> + <dl> + <dt><code>-d<var>interval</var></code></dt> + <dd>Daemonize and repeat cache cleaning every <var>interval</var> minutes. + This option is mutually exclusive with the <code>-D</code>, <code>-v</code> + and <code>-r</code> options. To shutdown the daemon cleanly, just send it + a <code>SIGTERM</code> or <code>SIGINT</code>.</dd> + + <dt><code>-D</code></dt> + <dd>Do a dry run and don't delete anything. This option is mutually + exclusive with the <code>-d</code> option. When doing a dry run and + deleting directories with <code>-t</code>, the inodes reported deleted + in the stats cannot take into account the directories deleted, and will + be marked as an estimate.</dd> + + <dt><code>-v</code></dt> + <dd>Be verbose and print statistics. This option is mutually exclusive + with the <code>-d</code> option.</dd> + + <dt><code>-r</code></dt> + <dd>Clean thoroughly. This assumes that the Apache web server is + not running (otherwise you may get garbage in the cache). This option + is mutually exclusive with the <code>-d</code> option and implies + the <code>-t</code> option.</dd> + + <dt><code>-n</code></dt> + <dd>Be nice. This causes slower processing in favour of other + processes. <code>htcacheclean</code> will sleep from time to time + so that (a) the disk IO will be delayed and (b) the kernel can schedule + other processes in the meantime.</dd> + + <dt><code>-t</code></dt> + <dd>Delete all empty directories. By default only cache files are + removed, however with some configurations the large number of + directories created may require attention. If your configuration + requires a very large number of directories, to the point that + inode or file allocation table exhaustion may become an issue, use + of this option is advised.</dd> + + <dt><code>-p<var>path</var></code></dt> + <dd>Specify <var>path</var> as the root directory of the disk cache. This + should be the same value as specified with the <code class="directive"><a href="../mod/mod_cache_disk.html#cacheroot">CacheRoot</a></code> directive.</dd> + + <dt><code>-P<var>pidfile</var></code></dt> + <dd>Specify <var>pidfile</var> as the name of the file to write the + process ID to when daemonized.</dd> + + <dt><code>-R<var>round</var></code></dt> + <dd>Specify <var>round</var> as the amount to round sizes up to, to + compensate for disk block sizes. Set to the block size of the cache + partition.</dd> + + <dt><code>-l<var>limit</var></code></dt> + <dd>Specify <var>limit</var> as the total disk cache size limit. The value + is expressed in bytes by default (or attaching <code>B</code> to the + number). Attach <code>K</code> for Kbytes or <code>M</code> for + MBytes.</dd> + + <dt><code>-L<var>limit</var></code></dt> + <dd>Specify <var>limit</var> as the total disk cache inode limit.</dd> + + <dt><code>-i</code></dt> + <dd>Be intelligent and run only when there was a modification of the disk + cache. This option is only possible together with the <code>-d</code> + option.</dd> + + <dt><code>-a</code></dt> + <dd>List the URLs currently stored in the cache. Variants of the same URL + will be listed once for each variant.</dd> + + <dt><code>-A</code></dt> + <dd>List the URLs currently stored in the cache, along with their + attributes in the following order: url, header size, body size, status, + entity version, date, expiry, request time, response time, body present, + head request.</dd> + </dl> + +</div><div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div> +<div class="section"> +<h2><a name="delete" id="delete">Deleting a specific URL</a></h2> + <p>If <code>htcacheclean</code> is passed one or more URLs, each URL will + be deleted from the cache. If multiple variants of an URL exists, all + variants would be deleted.</p> + + <p>When a reverse proxied URL is to be deleted, the effective URL is + constructed from the <strong>Host</strong> header, the + <strong>port</strong>, the <strong>path</strong> and the + <strong>query</strong>. Note the '?' in the URL must always be specified + explicitly, whether a query string is present or not. For example, an + attempt to delete the path <strong>/</strong> from the server + <strong>localhost</strong>, the URL to delete would be + <strong>http://localhost:80/?</strong>.</p> + +</div><div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div> +<div class="section"> +<h2><a name="list" id="list">Listing URLs in the Cache</a></h2> + <p>By passing the <code>-a</code> or <code>-A</code> options to + <code>htcacheclean</code>, the URLs within the cache will be listed + as they are found, one URL per line. The <code>-A</code> option + dumps the full cache entry after the URL, with fields in the + following order:</p> + + <dl> + <dt>url</dt><dd>The URL of the entry.</dd> + <dt>header size</dt><dd>The size of the header in bytes.</dd> + <dt>body size</dt><dd>The size of the body in bytes.</dd> + <dt>status</dt><dd>Status of the cached response.</dd> + <dt>entity version</dt><dd>The number of times this entry has been + revalidated without being deleted.</dd> + <dt>date</dt><dd>Date of the response.</dd> + <dt>expiry</dt><dd>Expiry date of the response.</dd> + <dt>request time</dt><dd>Time of the start of the request.</dd> + <dt>response time</dt><dd>Time of the end of the request.</dd> + <dt>body present</dt><dd>If 0, no body is stored with this request, + 1 otherwise.</dd> + <dt>head request</dt><dd>If 1, the entry contains a cached HEAD + request with no body, 0 otherwise.</dd> + </dl> + +</div><div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div> +<div class="section"> +<h2><a name="exit" id="exit">Exit Status</a></h2> + <p><code>htcacheclean</code> returns a zero status ("true") if all + operations were successful, <code>1</code> otherwise. If an URL is + specified, and the URL was cached and successfully removed, + <code>0</code> is returned, <code>2</code> otherwise. If an error + occurred during URL removal, <code>1</code> is returned.</p> +</div></div> +<div class="bottomlang"> +<p><span>Available Languages: </span><a href="../en/programs/htcacheclean.html" title="English"> en </a> | +<a href="../fr/programs/htcacheclean.html" hreflang="fr" rel="alternate" title="Français"> fr </a> | +<a href="../ko/programs/htcacheclean.html" hreflang="ko" rel="alternate" title="Korean"> ko </a> | +<a href="../tr/programs/htcacheclean.html" hreflang="tr" rel="alternate" title="Türkçe"> tr </a></p> +</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> +<script type="text/javascript"><!--//--><![CDATA[//><!-- +var comments_shortname = 'httpd'; +var comments_identifier = 'http://httpd.apache.org/docs/2.4/programs/htcacheclean.html'; +(function(w, d) { + if (w.location.hostname.toLowerCase() == "httpd.apache.org") { + d.write('<div id="comments_thread"><\/div>'); + var s = d.createElement('script'); + s.type = 'text/javascript'; + s.async = true; + s.src = 'https://comments.apache.org/show_comments.lua?site=' + comments_shortname + '&page=' + comments_identifier; + (d.getElementsByTagName('head')[0] || d.getElementsByTagName('body')[0]).appendChild(s); + } + else { + d.write('<div id="comments_thread">Comments are disabled for this page at the moment.<\/div>'); + } +})(window, document); +//--><!]]></script></div><div id="footer"> +<p class="apache">Copyright 2019 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> +<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[//><!-- +if (typeof(prettyPrint) !== 'undefined') { + prettyPrint(); +} +//--><!]]></script> +</body></html>
\ No newline at end of file |