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Add documentation for alternate mod_expires time syntax.

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PR:		1238


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@79555 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Ken Coar
1997-11-11 21:35:08 +00:00
parent f2a573e72a
commit 68e8bd21ce
1 changed files with 89 additions and 1 deletions
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90
docs/manual/mod/mod_expires.html
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@@ -154,6 +154,13 @@
>ExpiresDefault</A>
directive.
</P>
<P>
You can also specify the expiration time calculation using an
<A
HREF="#AltSyn"
>alternate syntax</A>,
described later in this document.
</P>
<HR>
<H2><A NAME="expiresdefault">
ExpiresDefault directive
@@ -178,8 +185,89 @@
HREF="#expiresbytype"
>ExpiresByType</A>
directive. See the description of that directive for details about
the syntax of the argument.
the syntax of the argument, and the
<A
HREF="#AltSyn"
>alternate syntax</A>
description as well.
</P>
<HR>
<H2>
<A NAME="AltSyn">Alternate Interval Syntax</A>
</H2>
<P>
The
<A
HREF="#expiresdefault"
><SAMP>ExpiresDefault</SAMP></A>
and
<A
HREF="#expiresbytype"
><SAMP>ExpiresByType</SAMP></A>
directives can also be defined in a more readable syntax of the form:
</P>
<DL>
<DD><CODE>ExpiresDefault "&lt;base&gt; [plus] {&lt;num&gt; &lt;type&gt;}*"
<BR>
ExpiresByType type/encoding "&lt;base&gt; [plus] {&lt;num&gt; &lt;type&gt;}*"</CODE>
</DD>
</DL>
<P>
where &lt;base&gt; is one of:
</P>
<MENU>
<LI><SAMP>access</SAMP>
</LI>
<LI><SAMP>now</SAMP> (equivalent to '<SAMP>access</SAMP>')
</LI>
<LI><SAMP>modification</SAMP>
</LI>
</MENU>
</P>
<P>
The '<SAMP>plus</SAMP>' keyword is optional. &lt;num&gt; should be an
integer value [acceptable to <SAMP>atoi()</SAMP>], and &lt;type&gt;
is one of:
</P>
<MENU>
<LI><SAMP>years</SAMP>
</LI>
<LI><SAMP>months</SAMP>
</LI>
<LI><SAMP>weeks</SAMP>
</LI>
<LI><SAMP>days</SAMP>
</LI>
<LI><SAMP>hours</SAMP>
</LI>
<LI><SAMP>minutes</SAMP>
</LI>
<LI><SAMP>seconds</SAMP>
</LI>
</MENU>
<P>
For example, any of the following directives can be used to make
documents expire 1 month after being accessed, by default:
</P>
<DL>
<DD><CODE>ExpiresDefault "access plus 1 month"
<BR>
ExpiresDefault "access plus 4 weeks"
<BR>
ExpiresDefault "access plus 30 days"
</DD>
</DL>
<P>
The expiry time can be fine-tuned by adding several '&lt;num&gt; &lt;type&gt;'
clauses:
</P>
<DL>
<DD><CODE>ExpiresByType text/html "access plus 1 month 15 days 2 hours"
<BR>
ExpiresByType image/gif "modification plus 5 hours 3 minutes"
</DD>
</DL>
<!--#include virtual="footer.html" -->
</BODY>
</HTML>