mirror of
https://github.com/apache/httpd.git
synced 2025-10-30 08:05:39 +03:00
dd8bdc09d2
git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1447971 13f79535-47bb-0310-9956-ffa450edef68
242 lines
14 KiB
XML
242 lines
14 KiB
XML
<?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><!--
|
||
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
|
||
This file is generated from xml source: DO NOT EDIT
|
||
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
|
||
-->
|
||
<title>htcacheclean - Clean up the disk cache - Apache HTTP Server</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.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/quickreference.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 2.5</p>
|
||
<img alt="" src="../images/feather.gif" /></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 2.5</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="../ko/programs/htcacheclean.html" hreflang="ko" rel="alternate" title="Korean"> ko </a> |
|
||
<a href="../tr/programs/htcacheclean.html" hreflang="tr" rel="alternate" title="T<>rk<72>e"> 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"><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></ul><ul class="seealso"><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="../ko/programs/htcacheclean.html" hreflang="ko" rel="alternate" title="Korean"> ko </a> |
|
||
<a href="../tr/programs/htcacheclean.html" hreflang="tr" rel="alternate" title="T<>rk<72>e"> 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/trunk/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 2013 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/quickreference.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> |