diff options
Diffstat (limited to 'rubbos/app/httpd-2.0.64/docs/manual/mod/mod_expires.html.en')
| -rw-r--r-- | rubbos/app/httpd-2.0.64/docs/manual/mod/mod_expires.html.en | 247 |
1 files changed, 0 insertions, 247 deletions
diff --git a/rubbos/app/httpd-2.0.64/docs/manual/mod/mod_expires.html.en b/rubbos/app/httpd-2.0.64/docs/manual/mod/mod_expires.html.en deleted file mode 100644 index 638d9ad1..00000000 --- a/rubbos/app/httpd-2.0.64/docs/manual/mod/mod_expires.html.en +++ /dev/null @@ -1,247 +0,0 @@ -<?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>mod_expires - 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 href="../images/favicon.ico" rel="shortcut icon" /></head> -<body> -<div id="page-header"> -<p class="menu"><a href="../mod/">Modules</a> | <a href="../mod/directives.html">Directives</a> | <a href="../faq/">FAQ</a> | <a href="../glossary.html">Glossary</a> | <a href="../sitemap.html">Sitemap</a></p> -<p class="apache">Apache HTTP Server Version 2.0</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 2.0</a> > <a href="./">Modules</a></div> -<div id="page-content"> -<div id="preamble"><h1>Apache Module mod_expires</h1> -<div class="toplang"> -<p><span>Available Languages: </span><a href="../en/mod/mod_expires.html" title="English"> en </a> | -<a href="../ja/mod/mod_expires.html" hreflang="ja" rel="alternate" title="Japanese"> ja </a> | -<a href="../ko/mod/mod_expires.html" hreflang="ko" rel="alternate" title="Korean"> ko </a></p> -</div> -<table class="module"><tr><th><a href="module-dict.html#Description">Description:</a></th><td>Generation of <code>Expires</code> and -<code>Cache-Control</code> HTTP headers according to user-specified -criteria</td></tr> -<tr><th><a href="module-dict.html#Status">Status:</a></th><td>Extension</td></tr> -<tr><th><a href="module-dict.html#ModuleIdentifier">Module Identifier:</a></th><td>expires_module</td></tr> -<tr><th><a href="module-dict.html#SourceFile">Source File:</a></th><td>mod_expires.c</td></tr></table> -<h3>Summary</h3> - - <p>This module controls the setting of the <code>Expires</code> - HTTP header and the <code>max-age</code> directive of the - <code>Cache-Control</code> HTTP header in server responses. The - expiration date can set to be relative to either the time the - source file was last modified, or to the time of the client - access.</p> - - <p>These HTTP headers are an instruction to the client about the - document's validity and persistence. If cached, the document may - be fetched from the cache rather than from the source until this - time has passed. After that, the cache copy is considered - "expired" and invalid, and a new copy must be obtained from the - source.</p> - - <p>To modify <code>Cache-Control</code> directives other than - <code>max-age</code> (see <a href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.9">RFC - 2616 section 14.9</a>), you can use the <code class="directive"><a href="../mod/mod_headers.html#header">Header</a></code> directive.</p> - -</div> -<div id="quickview"><h3 class="directives">Directives</h3> -<ul id="toc"> -<li><img alt="" src="../images/down.gif" /> <a href="#expiresactive">ExpiresActive</a></li> -<li><img alt="" src="../images/down.gif" /> <a href="#expiresbytype">ExpiresByType</a></li> -<li><img alt="" src="../images/down.gif" /> <a href="#expiresdefault">ExpiresDefault</a></li> -</ul> -<h3>Topics</h3> -<ul id="topics"> -<li><img alt="" src="../images/down.gif" /> <a href="#AltSyn">Alternate Interval Syntax</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="AltSyn" id="AltSyn">Alternate Interval Syntax</a></h2> - <p>The <code class="directive"><a href="#expiresdefault">ExpiresDefault</a></code> and - <code class="directive"><a href="#expiresbytype">ExpiresByType</a></code> directives - can also be defined in a more readable syntax of the form:</p> - - <div class="example"><p><code> - ExpiresDefault "<base> [plus] {<num> - <type>}*"<br /> - ExpiresByType type/encoding "<base> [plus] - {<num> <type>}*" - </code></p></div> - - <p>where <base> is one of:</p> - - <ul> - <li><code>access</code></li> - - <li><code>now</code> (equivalent to - '<code>access</code>')</li> - - <li><code>modification</code></li> - </ul> - - <p>The <code>plus</code> keyword is optional. <num> - should be an integer value [acceptable to <code>atoi()</code>], - and <type> is one of:</p> - - <ul> - <li><code>years</code></li> - <li><code>months</code></li> - <li><code>weeks</code></li> - <li><code>days</code></li> - <li><code>hours</code></li> - <li><code>minutes</code></li> - <li><code>seconds</code></li> - </ul> - - <p>For example, any of the following directives can be used to - make documents expire 1 month after being accessed, by - default:</p> - - <div class="example"><p><code> - ExpiresDefault "access plus 1 month"<br /> - ExpiresDefault "access plus 4 weeks"<br /> - ExpiresDefault "access plus 30 days" - </code></p></div> - - <p>The expiry time can be fine-tuned by adding several - '<num> <type>' clauses:</p> - - <div class="example"><p><code> - ExpiresByType text/html "access plus 1 month 15 - days 2 hours"<br /> - ExpiresByType image/gif "modification plus 5 hours 3 - minutes" - </code></p></div> - - <p>Note that if you use a modification date based setting, the - Expires header will <strong>not</strong> be added to content - that does not come from a file on disk. This is due to the fact - that there is no modification time for such content.</p> -</div> -<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div> -<div class="directive-section"><h2><a name="ExpiresActive" id="ExpiresActive">ExpiresActive</a> <a name="expiresactive" id="expiresactive">Directive</a></h2> -<table class="directive"> -<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Enables generation of <code>Expires</code> -headers</td></tr> -<tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>ExpiresActive On|Off</code></td></tr> -<tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config, virtual host, directory, .htaccess</td></tr> -<tr><th><a href="directive-dict.html#Override">Override:</a></th><td>Indexes</td></tr> -<tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Extension</td></tr> -<tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_expires</td></tr> -</table> - <p>This directive enables or disables the generation of the - <code>Expires</code> and <code>Cache-Control</code> headers for - the document realm in question. (That is, if found in an - <code>.htaccess</code> file, for instance, it applies only to - documents generated from that directory.) If set to - <code>Off</code>, the headers will not be generated for any - document in the realm (unless overridden at a lower level, such as - an <code>.htaccess</code> file overriding a server config - file). If set to <code>On</code>, the headers will be added to - served documents according to the criteria defined by the - <code class="directive"><a href="#expiresbytype">ExpiresByType</a></code> and - <code class="directive"><a href="#expiresdefault">ExpiresDefault</a></code> - directives (<em>q.v.</em>).</p> - - <p>Note that this directive does not guarantee that an - <code>Expires</code> or <code>Cache-Control</code> header will be - generated. If the criteria aren't met, no header will be sent, and - the effect will be as though this directive wasn't even - specified.</p> - -</div> -<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div> -<div class="directive-section"><h2><a name="ExpiresByType" id="ExpiresByType">ExpiresByType</a> <a name="expiresbytype" id="expiresbytype">Directive</a></h2> -<table class="directive"> -<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Value of the <code>Expires</code> header configured -by MIME type</td></tr> -<tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>ExpiresByType <var>MIME-type</var> -<var><code>seconds</var></code></td></tr> -<tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config, virtual host, directory, .htaccess</td></tr> -<tr><th><a href="directive-dict.html#Override">Override:</a></th><td>Indexes</td></tr> -<tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Extension</td></tr> -<tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_expires</td></tr> -</table> - <p>This directive defines the value of the <code>Expires</code> - header and the <code>max-age</code> directive of the - <code>Cache-Control</code> header generated for documents of the - specified type (<em>e.g.</em>, <code>text/html</code>). The second - argument sets the number of seconds that will be added to a base - time to construct the expiration date. The <code>Cache-Control: - max-age</code> is calculated by subtracting the request time from - the expiration date and expressing the result in seconds.</p> - - <p>The base time is either the last modification time of the - file, or the time of the client's access to the document. Which - should be used is specified by the - <code><var><code></var></code> field; <code>M</code> - means that the file's last modification time should be used as - the base time, and <code>A</code> means the client's access - time should be used.</p> - - <p>The difference in effect is subtle. If <code>M</code> is used, - all current copies of the document in all caches will expire at - the same time, which can be good for something like a weekly - notice that's always found at the same URL. If <code>A</code> is - used, the date of expiration is different for each client; this - can be good for image files that don't change very often, - particularly for a set of related documents that all refer to - the same images (<em>i.e.</em>, the images will be accessed - repeatedly within a relatively short timespan).</p> - - <div class="example"><h3>Example:</h3><p><code> - # enable expirations<br /> - ExpiresActive On<br /> - # expire GIF images after a month in the client's cache<br /> - ExpiresByType image/gif A2592000<br /> - # HTML documents are good for a week from the<br /> - # time they were changed<br /> - ExpiresByType text/html M604800 - </code></p></div> - - <p>Note that this directive only has effect if - <code>ExpiresActive On</code> has been specified. It overrides, - for the specified MIME type <em>only</em>, any expiration date - set by the <code class="directive"><a href="#expiresdefault">ExpiresDefault</a></code> - directive.</p> - - <p>You can also specify the expiration time calculation using - an <a href="#AltSyn">alternate syntax</a>, described earlier in - this document.</p> - -</div> -<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div> -<div class="directive-section"><h2><a name="ExpiresDefault" id="ExpiresDefault">ExpiresDefault</a> <a name="expiresdefault" id="expiresdefault">Directive</a></h2> -<table class="directive"> -<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Default algorithm for calculating expiration time</td></tr> -<tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>ExpiresDefault <var><code>seconds</var></code></td></tr> -<tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config, virtual host, directory, .htaccess</td></tr> -<tr><th><a href="directive-dict.html#Override">Override:</a></th><td>Indexes</td></tr> -<tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Extension</td></tr> -<tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_expires</td></tr> -</table> - <p>This directive sets the default algorithm for calculating the - expiration time for all documents in the affected realm. It can be - overridden on a type-by-type basis by the <code class="directive"><a href="#expiresbytype">ExpiresByType</a></code> directive. See the - description of that directive for details about the syntax of the - argument, and the <a href="#AltSyn">alternate syntax</a> - description as well.</p> - -</div> -</div> -<div class="bottomlang"> -<p><span>Available Languages: </span><a href="../en/mod/mod_expires.html" title="English"> en </a> | -<a href="../ja/mod/mod_expires.html" hreflang="ja" rel="alternate" title="Japanese"> ja </a> | -<a href="../ko/mod/mod_expires.html" hreflang="ko" rel="alternate" title="Korean"> ko </a></p> -</div><div id="footer"> -<p class="apache">Copyright 2009 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="../faq/">FAQ</a> | <a href="../glossary.html">Glossary</a> | <a href="../sitemap.html">Sitemap</a></p></div> -</body></html>
\ No newline at end of file |