<div class="docbook"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">4.2. Broker</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="Java-Broker-Concepts.html">Prev</a> </td><th width="60%" align="center">Chapter 4. Concepts</th><td width="20%" align="right"> <a accesskey="n" href="Java-Broker-Concepts-Virtualhost-Nodes.html">Next</a></td></tr></table><hr /></div><div class="section"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="Java-Broker-Concepts-Broker"></a>4.2. Broker</h2></div></div></div><p>The <span class="emphasis"><em>Broker</em></span> is the outermost entity within the system.</p><p>The Broker is backed by storage. This storage is used to record the durable entities that exist beneath it.</p></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="Java-Broker-Concepts.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="Java-Broker-Concepts.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="Java-Broker-Concepts-Virtualhost-Nodes.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Chapter 4. Concepts </td><td width="20%" align="center"><a accesskey="h" href="Apache-Qpid-Broker-J-Book.html">Home</a></td><td width="40%" align="right" valign="top"> 4.3. Virtualhost Nodes</td></tr></table></div></div>