her details on HTTP headers and
          caching.
        </li>
        
<li>
          Cache in the server. It may help to include a parameter in
          the URL which has a timestamp as the value min order to
          decide whether a request is repeated. IEx is reported to
          retrieve a document up to three times, but never more often.
        </li>
      
</ul>
</div>
    
<a name="N10108"></a><a name="servlet-engine"></a>
<h2 class="underlined_10">Servlet Engines</h2>
<div class="section">
<