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From conflue...@apache.org
Subject [CONF] Apache ServiceMix > ServiceMix 5 - NMR Improvements
Date Wed, 02 Mar 2011 21:53:00 GMT
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    <h2><a href="https://cwiki.apache.org/confluence/display/SM/ServiceMix+5+-+NMR+Improvements">ServiceMix
5 - NMR Improvements</a></h2>
    <h4>Page  <b>added</b> by             <a href="https://cwiki.apache.org/confluence/display/~gertvanthienen">Gert
Vanthienen</a>
    </h4>
         <br/>
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         <p>This document attempts to capture the requirements, use cases and other
ideas we have in mind for the improved NMR layer inside ServiceMix.</p>

<h3><a name="ServiceMix5-NMRImprovements-Requirements"></a>Requirements</h3>
<ul>
	<li>Allow for
	<ul>
		<li>low overhead interaction between endpoints on the same node</li>
		<li>transparent interaction between endpoint multiple ServiceMix nodes</li>
	</ul>
	</li>
	<li>Service Registry
	<ul>
		<li>API to allow looking up services/endpoints on local node</li>
		<li>Extensible to allow adding custom (business-oriented) information in it</li>
	</ul>
	</li>
	<li>Service Locator
	<ul>
		<li>Allow delegating service invocations to services on remote nodes</li>
	</ul>
	</li>
	<li>Support using distributed transactions (across components and nodes)
	<ul>
		<li>Using a default transaction manager inside ServiceMix</li>
		<li>Using a external/remote transaction manager</li>
	</ul>
	</li>
	<li>Clustering/clouding
	<ul>
		<li>State replication</li>
		<li>Management of cluster nodes</li>
	</ul>
	</li>
</ul>


<h3><a name="ServiceMix5-NMRImprovements-Usecases"></a>Use cases</h3>
<ul>
	<li><b>Use case 1</b>: Loosely coupled Camel routes on the same node <br
class="atl-forced-newline" /> Camel routes in separate bundles can interact by sending
exchanges through the NMR without the overhead of serialization/copying data/...</li>
	<li><b>Use case 2</b>: Loosely coupled Camel routes on multiple nodes <br
class="atl-forced-newline" /> Camel routes on multiple nodes can communicate by sending
exchanges through the NMR.  The underlying implementation will probably be ActiveMQ Apollo.
 <br class="atl-forced-newline" /> (What data types can we support here?)</li>
	<li><b>Use case 3</b>: Seamlessly migrate Camel routes running on the same
node to different nodes (i.e. without the calling route having to be aware of the change)</li>
</ul>


<h3><a name="ServiceMix5-NMRImprovements-AnewnamefortheNMR"></a>A new name
for the NMR</h3>
<p>Some suggestions:</p>
<ul>
	<li>SGL (ServiceMix Gateway Layer)</li>
	<li>SML (ServiceMix Messaging Layer</li>
	<li>EML (Endpoint Messaging Layer)</li>
</ul>

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