@@ -1,24 +1,27 @@
<?xml version="1.0" encoding="windows-1251"?>
<!-- $Revision$ -->
<chapter id= "caching" >
<title > Caching </title>
<title > <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> </title>
<para >
Caching is used to speed up a call to
<link linkend= "api.display" > display()</link> or
<link linkend= "api.fetch" > fetch()</link> by saving its output to a file.
If a cached version of the call is available, that is displayed instead of
regenerating the output. Caching can speed things up tremendously,
especially templates with longer computation times. Since the output of
display() or fetch() is cached, one cache file could conceivably be made up
of several template files, config files, etc.
<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <20> <> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <20> <> <EFBFBD> <20> <> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <20> <> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD>
<link linkend= "api.display" > display()</link> <EFBFBD> <EFBFBD> <EFBFBD>
<link linkend= "api.fetch" > fetch()</link> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <20> <> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <20> <> <20> <> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <20>
<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> . <20> <> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <20> <> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <20> <> <EFBFBD> <EFBFBD> <EFBFBD> (<28> <> <EFBFBD> <EFBFBD> <20> <> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <20> <> <EFBFBD> <EFBFBD> <EFBFBD> <20> <> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> ) <20> <> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD>
<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> , <20> <> <EFBFBD> <20> <> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <20> <> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> . <20> <> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <20> <> <EFBFBD> <EFBFBD> <EFBFBD> <20> <> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <20> <> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD>
<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> , <20> <> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <20> <> <EFBFBD> <EFBFBD> <20> <> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <20> <> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <20> <> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <20> <20> <> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <20> <> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD>
<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> . <20> <> <EFBFBD> <20> <> <EFBFBD> <20> <> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <20> <> <EFBFBD> <EFBFBD> <EFBFBD> <link linkend= "api.display" > display()</link> <20>
<link linkend= "api.fetch" > fetch()</link> , <20> <> <EFBFBD> <EFBFBD> <20> <> <EFBFBD> <EFBFBD> <20> <20> <> <EFBFBD> <EFBFBD> <20> <> <EFBFBD> <EFBFBD> <EFBFBD>
<20> <> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <20> <> <20> <> <EFBFBD> <EFBFBD> <20> <> <EFBFBD> <EFBFBD> <EFBFBD> <20> <> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <20> <> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> , <20> <> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <20> <> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> - <20> <> <EFBFBD> <EFBFBD> <EFBFBD>
<20> <> <EFBFBD> <EFBFBD> , <20> <> <EFBFBD> <20> <> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <20> <> <EFBFBD> <20> <> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <20> <> <EFBFBD> <EFBFBD> <EFBFBD> <20> <> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> .
</para>
<para >
Since templates are dynamic, it is important to be careful what you are
caching and for how long. For instance, if you are displaying the front page
of your website that does not change its content very often, it might work
well to cache this page for an hour or more. On the other hand, if you are
displaying a page with a weather map containing new information by the
minute, it would not make sense to cache this page .
<EFBFBD> <EFBFBD> <EFBFBD> <20> <> <EFBFBD> <20> <> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <20> <> <EFBFBD> <EFBFBD> <EFBFBD> <20> <> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <20> <> <20> <> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> , <20> <> <EFBFBD> <EFBFBD> <EFBFBD> <20> <> <EFBFBD> <EFBFBD> <EFBFBD> <20> <> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <20> <> <20> <> <EFBFBD> <20> <> <EFBFBD>
<EFBFBD> <EFBFBD> <20> <> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <20> <20> <> <20> <> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <20> <> <EFBFBD> <EFBFBD> . <20> <> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> , <20> <> <EFBFBD> <EFBFBD> <20> <> <20> <> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <20> <> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD>
<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <20> <> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <20> <> <EFBFBD> <EFBFBD> <EFBFBD> , <20> <> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <20> <> <20> <> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <20> <> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <20> <> <EFBFBD> <EFBFBD> <EFBFBD> , <20> <> <20> <> <20> <> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD>
<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <20> <> <EFBFBD> <EFBFBD> <EFBFBD> <20> <> <20> <> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <20> <20> <> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <20> <> <EFBFBD> <EFBFBD> <20> <> <EFBFBD> <20> <> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> . <20> <20> <> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <20> <> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> , <20> <> <EFBFBD> <EFBFBD>
<EFBFBD> <EFBFBD> <20> <> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <20> <> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <20> <20> <> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <20> <> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> , <20> <> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <20> <> <EFBFBD> <EFBFBD> <EFBFBD> <20> <> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <20> <20> <> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD>
<EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> , <20> <> <20> <> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> <20> <> <20> <> <20> <> <EFBFBD> <EFBFBD> <EFBFBD> <20> <> <EFBFBD> <EFBFBD> <EFBFBD> <EFBFBD> .
</para>
&programmers.caching.caching-setting-up;