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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN">
<html>
<head>
<meta HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1">
<meta NAME="Author" CONTENT="Stefano Mazzocchi">
<title>Glossary</title>
</head>
<body BGCOLOR="#FFFFFF">
<p align="center"><a href="http://java.apache.org/" target="_top"><img SRC="images/java-apache-project.gif" BORDER="0" WIDTH="609"
HEIGHT="100" ALT="The Java Apache Project"></a></p>
<h1 align="center">Glossary</h1>
<div align="center"><center>
<table border="0" width="80%" bgcolor="#000000" cellspacing="0" cellpadding="0">
<tr>
<td><table border="0" width="100%" cellspacing="2" cellpadding="4">
<tr>
<td bgcolor="#e0e0e0" colspan="2"><strong>Apache JServ</strong></td>
</tr>
<tr>
<td width="10%" bgcolor="#FFFFFF"><br>
</td>
<td bgcolor="#F0F0F0" width="90%">the 100% pure Java server application that acts as an
independent servlet-request server.</td>
</tr>
<tr>
<td bgcolor="#e0e0e0" colspan="2"><strong>mod_jserv</strong></td>
</tr>
<tr>
<td width="10%" bgcolor="#FFFFFF"><br>
</td>
<td bgcolor="#F0F0F0" width="90%">the Apache module that converts HTTP requests to servlet
requests, connecting to the proper servlet engine and sending back the HTTP response to
the client.</td>
</tr>
<tr>
<td bgcolor="#e0e0e0" colspan="2"><strong>Apache JServ Protocol</strong></td>
</tr>
<tr>
<td width="10%" bgcolor="#FFFFFF"><br>
</td>
<td bgcolor="#F0F0F0" width="90%">the protocol used to communicate between the web server
and the servlet engine over a TCP/IP connection.</td>
</tr>
<tr>
<td bgcolor="#e0e0e0" colspan="2"><strong>Local Mode</strong></td>
</tr>
<tr>
<td width="10%" bgcolor="#FFFFFF"><br>
</td>
<td bgcolor="#F0F0F0" width="90%"><p align="left">when the web server and the servlet
engine are run by the same machine and share the same system resources. This mode has two
flavors:</p>
<ul>
<li><p align="left"><i>integrated/automatic</i> is when the web server controls the
execution of the servlet engine, spawning the JVM process, restarting it if it crashes and
stopping it when the web server is shut down.</p>
</li>
<li><p align="left"><i>standalone/manual</i> is when the two applications are executed
independently and do not control each other. </p>
</li>
</ul>
</td>
</tr>
<tr>
<td bgcolor="#e0e0e0" colspan="2"><strong>Remote Mode</strong></td>
</tr>
<tr>
<td width="10%" bgcolor="#FFFFFF"><br>
</td>
<td bgcolor="#F0F0F0" width="90%"><p align="left">when the two applications reside on
different machines and connect using a TCP/IP connection. This allows the two applications
to use different system resources (CPU, memory, disks) and reduce to a minimum the
overhead of servlet execution on existing web servers and their resources.</td>
</tr>
<tr>
<td bgcolor="#e0e0e0" colspan="2"><strong>Servlet</strong></td>
</tr>
<tr>
<td width="10%" bgcolor="#FFFFFF"><br>
</td>
<td bgcolor="#F0F0F0" width="90%">any Java class that implements the javax.servlet.Servlet
interface and is, therefore, executable by any compliant servlet engine.</td>
</tr>
<tr>
<td bgcolor="#e0e0e0" colspan="2"><strong>Servlet Repository</strong></td>
</tr>
<tr>
<td width="10%" bgcolor="#FFFFFF"><br>
</td>
<td bgcolor="#F0F0F0" width="90%">is a collection of compiled servlets. A repository may
be a single directory or a single compressed archive (jar or zip)</td>
</tr>
<tr>
<td bgcolor="#e0e0e0" colspan="2"><strong>Servlet Zone</strong></td>
</tr>
<tr>
<td width="10%" bgcolor="#FFFFFF"><br>
</td>
<td bgcolor="#F0F0F0" width="90%">is the servlet engine equivalent of a web server's
virtual host, separating servlets into different contexts.</td>
</tr>
</table>
</td>
</tr>
</table>
</center></div>
<p align="center"><font SIZE="-1">Copyright (c) 1997-99 <a HREF="http://java.apache.org/"
target="_top">The Java Apache Project</a>.<br>
$Id: glossary.html,v 1.5 1999/06/09 05:21:22 jonbolt Exp $<br>
All rights reserved.</font></p>
</body>
</html>
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