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SREFV12J
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hitlen.cnf
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<h1> Enable the "do not record repetitive hits" cache </h1>
To avoid recording repetitive requests from the same client, you
can enable SRE-Filter's <em>repetitive hits</em> cache.
<p>
<FORM ACTION="/srefconf" METHOD="GET">
<input type="hidden" name="SET" value="HIT_CACHE_LEN">
Turn on the the <em>repetitive hits</em> cache:
<ul>
<LI><INPUT TYPE=RADIO NAME="yesno" VALUE="2" $isbig ><b>Big Cache</b>: More complete, but slower
<LI><INPUT TYPE=RADIO NAME="yesno" VALUE="1" $issmall ><b>Medium Sized Cache</b>: Less complete, but quicker
<LI><INPUT TYPE=RADIO NAME="yesno" VALUE="0" $isno ><B>No Cache</b>: Do <b>not</b> use the <em>repetitive hits</em> cache
</ul>
<INPUT TYPE="submit" VALUE="Update this Parameter">
</FORM>
$cancel
<hr>
<h2>Notes </h2>
To reduce the number of "false hits" (from clients returning to
a document after a short absence, which is often caused by the
use of a browser's "backup" key), a <em>repetitive hits</em> cache can be
maintained. If a request matches a request in this cache (where
the request selector and the client's IP address must both match),
the <em>hit counter</em> and <em>transaction recorder</em>
will not be augmented.
<P>
You can choose between two types of cache:
<ol>
<LI> A <b>Big Cache</b>: The <b>big cache</b> will retain all requests
recieved in the last 30 minutes. There is basically no limit on
the number of hits cached. The downside is that a file is used to store
the cache; a design compromise that might slow down throughput.
<LI> A <b>Medium Sized Cache</b>: The <b>small cache</b> will retain requests
recieved during the last 10 minutes, up to a maximum of 500 hits.
On busy sites, this 500 hit limit might be quickly saturated, reducing
the effective in-cache residence time of each hit. The upside is that it's
quicker to check, since the cache is stored in memory.
</ol>
<p>
If you want finer control of SRE-Filter's <em>repetitive hits</em> cache,
you can use the <A HREF="/config2.htm#initfilt">intermediate mode
configurator</A> to modify the <var>HIT_CACHE_LEN</var> and <var>HIT_CACHE_DURATION</var>
parameters.
<br>