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From jstrac...@apache.org
Subject svn commit: r374430 [38/45] - /incubator/activemq/site/
Date Thu, 02 Feb 2006 16:33:52 GMT
Added: incubator/activemq/site/Supporting+IO+Streams
URL: http://svn.apache.org/viewcvs/incubator/activemq/site/Supporting%2BIO%2BStreams?rev=374430&view=auto
==============================================================================
--- incubator/activemq/site/Supporting+IO+Streams (added)
+++ incubator/activemq/site/Supporting+IO+Streams Thu Feb  2 08:31:10 2006
@@ -0,0 +1,268 @@
+
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+                <td>
+            Supporting IO Streams 
+                </td>
+                <td align="right">
+            
+                </td>
+              </tr>
+            </table>
+          </div>
+
+
+          <div>
+  <div id="Content">
+    <p>It'd be great to offer kick ass support for streaming files over ActiveMQ of any arbitrary size. The basic idea is to fragment the stream into multiple messages and send/receive those over JMS.</p>
+    <p>There are a few issues to consider...</p>
+    <h3><a name="SupportingIOStreams-Usecasess"></a>Use casess</h3>
+    <p class="paragraph">
+      <ol>
+        <li>many producers writing and only 1 consumer. Each consumer ideally should completely process 1 stream at once (IO streams are often blocking IO, so the client thread can't do much with other streams while its reading 1).</li>
+        <li>if a consumer gets 1Gb through a 10Gb file and dies, we need to re-deliver the messages to another consumer.</li>
+      </ol>
+    </p>
+    <h3><a name="SupportingIOStreams-Goal"></a>Goal</h3>
+    <p>Our goal should be</p>
+    <ul>
+      <li>for each consumer to process a single stream in one go before trying to process another.</li>
+    </ul>
+    <h3><a name="SupportingIOStreams-PossibleFailureConditions"></a>Possible Failure Conditions</h3>
+    <ul>
+      <li>Consumer could die in the middle of reading a stream. Recovery options: <ol>
+          <li>Trash the rest of the stream</li>
+          <li>Restart delivery of the stream to the next consumer</li>
+          <li>Continue delivery of the steam to the next consumer at the point of failure.</li>
+        </ol>
+      </li>
+      <li>Producer could die in the middle of writing a stream. We may need to detect his failure. We could <ol>
+          <li>Send the stream in a transaction. The stream is not sent to a consumer until it's fully received by the broker. Down side: consumer has high latency before being able to receive the message.</li>
+          <li>Consumer timeout: if a message is not receive soon enough the consumer assumes the producer is dead. (What if he's not??)</li>
+        </ol>
+      </li>
+      <li>Consumer could start to receive in the middle of a stream. Condition could happen: <ol>
+          <li>if another consumer assumed the broker was dead (but it was not).</li>
+          <li>if a non stream consumer acidentally removed messages, or messages were sent to the DLQ due to consumer rollbacks.</li>
+        </ol>
+      </li>
+    </ul>
+    <h3><a name="SupportingIOStreams-ImplementationIssues"></a>Implementation Issues</h3>
+    <ul>
+      <li>we can use message groups to ensure the same consumer processes all messages for a given stream - but unfortunately message groups does not prevent a consumer being overloaded with more than one message group at a time - maybe thats a new feature we can add?</li>
+      <li>avoid the broker running out of RAM - so spool to disk (or throttle the producer) if the only consumer is working on a different stream. <ul>
+          <li>If messages sent using transactions, major chanages need may need to be made to how we do transaction management and message journaling. Currently, all messages in a in progress transaction are held in memory until it commits (Synchronization callbacks are holding on the the messages). The journal currently holds on to all transacted messages in it's journal + memory until commit, it does now allow the journal to rollover messages that are part of transaction that is in progess.</li>
+        </ul>
+      </li>
+      <li>given that the entire stream must be processed in one go, we can only ACK the entire stream of messages - so we need to disable pre-fetch? <ul>
+          <li>Prefetch disabling is not needed as the consumers send back a special kind of ack which only temporarily expands the prefetch window.</li>
+        </ul>
+      </li>
+    </ul>
+  </div>
+</div>
+
+          &nbsp;
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+
+

Added: incubator/activemq/site/TCP+Transport+Reference
URL: http://svn.apache.org/viewcvs/incubator/activemq/site/TCP%2BTransport%2BReference?rev=374430&view=auto
==============================================================================
--- incubator/activemq/site/TCP+Transport+Reference (added)
+++ incubator/activemq/site/TCP+Transport+Reference Thu Feb  2 08:31:10 2006
@@ -0,0 +1,271 @@
+
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+    <li><a href="How+do+I+embed+a+Broker+inside+a+Connection" title="How do I embed a Broker inside a Connection">Embedded Brokers</a></li>
+    <li><a href="JMeter+Performance+Tests" title="JMeter Performance Tests">Performance Testing</a></li>
+    <li><a href="Web+Samples" title="Web Samples">Web Samples</a></li>
+    <li><a href="Hello+World" title="Hello World">Hello World</a></li>
+  </ul>
+  <h3><a name="Navigation-Features"></a>Features</h3>
+  <ul class="alternate" type="square">
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+    <li><a href="Persistence" title="Persistence">Persistence</a></li>
+    <li><a href="JDBC+Support" title="JDBC Support">JDBC Support</a></li>
+    <li><a href="Clustering" title="Clustering">Clustering</a></li>
+    <li><a href="Discovery" title="Discovery">Discovery</a></li>
+    <li><a href="Networks+of+Brokers" title="Networks of Brokers">Networks of Brokers</a></li>
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+  </ul>
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+  </ul>
+  <h3><a name="Navigation-Toolsweuse"></a>Tools we use</h3><span><span class="nobr"><a href="http://www.yourkit.com" rel="nofollow"><img align="absmiddle" border=0 src="/download/attachments/23786/yourkit.jpg"></a></span></span></span>
+
+            <h3 class="heading3">Feeds</h3>
+            <table border="0" cellspacing="4px">
+            <tr>
+              <td align="right">
+                <a href="http://docs.codehaus.org/spaces/rss.action?key=ACTIVEMQ&newPages=false"><img src="http://docs.codehaus.org/images/icons/rss.gif" border="0"></a><br/>
+              </td>
+              <td align="left">
+                <a href="http://docs.codehaus.org/spaces/rss.action?key=ACTIVEMQ&newPages=false">Site</a>
+              </td>
+            </tr>
+            <tr>
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+        </td>
+        <td id="rightColumn" valign="top">
+
+          <div id="page_title">
+            <table width="100%">
+              <tr>
+                <td>
+            TCP Transport Reference 
+                </td>
+                <td align="right">
+            
+                </td>
+              </tr>
+            </table>
+          </div>
+
+
+          <div>
+  <div id="Content">
+    <h3><a name="TCPTransportReference-TheTCPTransport"></a>The TCP Transport</h3>
+    <p>The TCP transport allows clients to connect a remote ActiveMQ using a a TCP socket.</p>
+    <h4><a name="TCPTransportReference-ConfigurationSyntax"></a>Configuration Syntax</h4>
+    <p><b>tcp://hostname:post?transportOptions</b></p>
+    <h5><a name="TCPTransportReference-TransportOptions"></a>Transport Options</h5>
+    <p class="paragraph">
+      <table class="confluenceTable">
+        <tbody>
+          <tr>
+            <th class="confluenceTh">Option Name</th>
+            <th class="confluenceTh">Default Value</th>
+            <th class="confluenceTh">Description</th>
+          </tr>
+          <tr>
+            <td class="confluenceTd">minmumWireFormatVersion</td>
+            <td class="confluenceTd">0</td>
+            <td class="confluenceTd">The minimum version wireformat that is allowed</td>
+          </tr>
+          <tr>
+            <td class="confluenceTd">trace</td>
+            <td class="confluenceTd">false</td>
+            <td class="confluenceTd">Causes all commands that are sent over the transport to be logged</td>
+          </tr>
+          <tr>
+            <td class="confluenceTd">useLocalHost</td>
+            <td class="confluenceTd">true</td>
+            <td class="confluenceTd">When true, it causes the local machines name to resolve to &quot;localhost&quot;.</td>
+          </tr>
+          <tr>
+            <td class="confluenceTd">wireFormat</td>
+            <td class="confluenceTd">default</td>
+            <td class="confluenceTd">The name of the WireFormat to use</td>
+          </tr>
+          <tr>
+            <td class="confluenceTd">wireFormat.*</td>
+            <td class="confluenceTd">&nbsp;</td>
+            <td class="confluenceTd">All the properties with this prefix are used to configure the wireFormat</td>
+          </tr>
+        </tbody>
+      </table>
+    </p>
+    <h5><a name="TCPTransportReference-ExampleURI"></a>Example URI</h5>
+    <p class="paragraph">
+      <div class="preformatted">
+        <div class="preformattedContent"><pre>tcp://localhost:61616?trace=false
+</pre></div>
+      </div>
+    </p>
+  </div>
+</div>
+
+          &nbsp;
+        </td>
+      </tr>
+      <tr>
+        <td colspan="3" id="footer">
+          <table width="100%"> 
+            <tr>
+              <td align="left" valign="top">
+          
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+              <td align="right" valign="top">
+          <a style="color:#999;" href="http://docs.codehaus.org/pages/editpage.action?spaceKey=ACTIVEMQ&title=TCP+Transport+Reference">[ edit ]</a>
+              </td>
+            </tr>
+          <table>
+        </td>
+      </tr>
+    </table>
+  </body>
+
+</html>
+
+

Added: incubator/activemq/site/Team
URL: http://svn.apache.org/viewcvs/incubator/activemq/site/Team?rev=374430&view=auto
==============================================================================
--- incubator/activemq/site/Team (added)
+++ incubator/activemq/site/Team Thu Feb  2 08:31:10 2006
@@ -0,0 +1,505 @@
+
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
+<html>
+  <head>
+    <link rel="stylesheet" href="site.css" type="text/css">
+
+
+
+    <title>ActiveMQ - Team</title>
+  </head>
+
+  <body>
+    <table width="100%" id="layout" style="padding:0px;margin0px;border-collapse:collapse;">
+      <tr>
+        <td colspan="3" style="padding:8px;">
+          <table width="100%" id="banner" style="padding:0px;margin:0px">
+            <tr id="header_row">
+              <td align="left" valign="middle" style="padding:0px;margin:0px;">
+                <span id="Content"><span><span class="nobr"><a href="http://incubator.apache.org/activemq" rel="nofollow"><img align="absmiddle" border=0 src="images/logo.gif"></a></span></span></span>
+
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+              
+            </tr>
+          </table>
+        </td>
+      </tr>
+      <tr>
+        <td colspan="3" id="breadcrumbs">
+          <table width="100%" id="banner" style="padding:0px;margin:0px">
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+              <td align="left">
+                <a href="">Home</a>  | <a href="Navigation">Navigation</a> &gt; Team
+              </td>
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+                  <span id="Content"><span><a href="Download" title="Download">Download</a> | <span class="nobr"><a href="http://activemq.codehaus.org/maven/apidocs/" rel="nofollow">JavaDocs for 4.x</a></span> <span class="nobr"><a href="http://activemq.org/maven/activemq-3/activemq-core/apidocs/" rel="nofollow">3.x</a></span> | <a href="Source" title="Source">Source</a> | <span class="nobr"><a href="http://docs.codehaus.org/pages/listpages.action?key=ACTIVEMQ" rel="nofollow">Wiki</a></span> |<span class="nobr"><a href="irc://irc.codehaus.org/activemq" rel="nofollow">IRC</a></span> | <span class="nobr"><a href="http://servlet.uwyn.com/drone/log/hausbot/activemq" rel="nofollow">IRC Log</a></span> | <a href="Mailing+Lists" title="Mailing Lists">Mailing Lists</a> | <span class="nobr"><a href="http://forums.logicblaze.com/forums/show/1.page" rel="nofollow">Discussion Forum</a></span> | <span class="nobr"><a href="http://jira.logicblaze.com/jira/browse/AMQ" rel="nofollow">Support
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+
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+        </td>
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+          <span id="Content"><h3><a name="Navigation-Overview"></a>Overview</h3>
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+  <h3><a name="Navigation-UsingActiveMQ"></a>Using ActiveMQ</h3>
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+    <li><a href="Run+Broker" title="Run Broker">Running a Broker</a></li>
+    <li><a href="Examples" title="Examples">Examples</a></li>
+    <li><a href="How+can+I+monitor+ActiveMQ" title="How can I monitor ActiveMQ">Monitoring the Broker</a></li>
+    <li><a href="Xml+Configuration" title="Xml Configuration">Xml Configuration</a></li>
+    <li><a href="Xml+Reference" title="Xml Reference">Xml Reference</a></li>
+    <li><a href="Use+Cases" title="Use Cases">Use Cases</a></li>
+    <li><a href="Topologies" title="Topologies">Topologies</a></li>
+    <li><a href="Configuring+Transports" title="Configuring Transports">Configuring Transports</a></li>
+    <li><a href="How+do+I+embed+a+Broker+inside+a+Connection" title="How do I embed a Broker inside a Connection">Embedded Brokers</a></li>
+    <li><a href="JMeter+Performance+Tests" title="JMeter Performance Tests">Performance Testing</a></li>
+    <li><a href="Web+Samples" title="Web Samples">Web Samples</a></li>
+    <li><a href="Hello+World" title="Hello World">Hello World</a></li>
+  </ul>
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+    <li><a href="Persistence" title="Persistence">Persistence</a></li>
+    <li><a href="JDBC+Support" title="JDBC Support">JDBC Support</a></li>
+    <li><a href="Clustering" title="Clustering">Clustering</a></li>
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+    <li><a href="Networks+of+Brokers" title="Networks of Brokers">Networks of Brokers</a></li>
+    <li><a href="Composite+Destinations" title="Composite Destinations">Composite Destinations</a></li>
+    <li><a href="JMS+Streams" title="JMS Streams">JMS Streams</a></li>
+    <li><a href="Advisory+Message" title="Advisory Message">Advisory Message</a></li>
+    <li><a href="Resource+Adapter" title="Resource Adapter">JCA 1.5 Resource Adapter</a></li>
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+  </ul>
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+    <li><a href="ActiveMQ+4.0" title="ActiveMQ 4.0">ActiveMQ 4.0</a></li>
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+    <li><span class="nobr"><a href="http://activemq.codehaus.org/maven/activemq.xsd.html" rel="nofollow">XSD</a></span></li>
+  </ul>
+  <h3><a name="Navigation-Toolsweuse"></a>Tools we use</h3><span><span class="nobr"><a href="http://www.yourkit.com" rel="nofollow"><img align="absmiddle" border=0 src="/download/attachments/23786/yourkit.jpg"></a></span></span></span>
+
+            <h3 class="heading3">Feeds</h3>
+            <table border="0" cellspacing="4px">
+            <tr>
+              <td align="right">
+                <a href="http://docs.codehaus.org/spaces/rss.action?key=ACTIVEMQ&newPages=false"><img src="http://docs.codehaus.org/images/icons/rss.gif" border="0"></a><br/>
+              </td>
+              <td align="left">
+                <a href="http://docs.codehaus.org/spaces/rss.action?key=ACTIVEMQ&newPages=false">Site</a>
+              </td>
+            </tr>
+            <tr>
+              <td align="right">
+                <a href="http://docs.codehaus.org/spaces/blogrss.action?key=ACTIVEMQ"><img src="http://docs.codehaus.org/images/icons/rss.gif" border="0"></a>
+              </td>
+              <td align="left">
+                <a href="http://docs.codehaus.org/spaces/blogrss.action?key=ACTIVEMQ">News</a>
+              </td>
+            </tr>
+            </table>
+        </td>
+        <td id="rightColumn" valign="top">
+
+          <div id="page_title">
+            <table width="100%">
+              <tr>
+                <td>
+            Team 
+                </td>
+                <td align="right">
+            
+                </td>
+              </tr>
+            </table>
+          </div>
+
+
+          <div>
+  <div id="Content">
+    <p>This page lists who we are. By all means add yourself to the list - lets sort it in alphabetical order</p>
+    <h3><a name="Team-Committers"></a>Committers</h3>
+    <p class="paragraph">
+      <table class="confluenceTable">
+        <tbody>
+          <tr>
+            <th class="confluenceTh">Name</th>
+            <th class="confluenceTh">ID</th>
+            <th class="confluenceTh">Organisation</th>
+          </tr>
+          <tr>
+            <td class="confluenceTd"> Aaron Mulder </td>
+            <td class="confluenceTd"> ammulder </td>
+            <td class="confluenceTd"><span class="nobr"><a href="http://chariotsolutions.com" rel="nofollow">Chariot Solutions</a></span></td>
+          </tr>
+          <tr>
+            <td class="confluenceTd"> Adrian Co </td>
+            <td class="confluenceTd"> aco </td>
+            <td class="confluenceTd"><span class="nobr"><a href="http://logicblaze.com" rel="nofollow">LogicBlaze</a></span></td>
+          </tr>
+          <tr>
+            <td class="confluenceTd"> Alan D. Cabrera </td>
+            <td class="confluenceTd"> maguro </td>
+            <td class="confluenceTd"><span class="nobr"><a href="http://logicblaze.com" rel="nofollow">LogicBlaze</a></span></td>
+          </tr>
+          <tr>
+            <td class="confluenceTd"> Brian McCallister </td>
+            <td class="confluenceTd"> brianm </td>
+            <td class="confluenceTd"><span class="nobr"><a href="http://ning.com" rel="nofollow">Ning</a></span></td>
+          </tr>
+          <tr>
+            <td class="confluenceTd"> Dag Liodden </td>
+            <td class="confluenceTd"> daggerrz </td>
+            <td class="confluenceTd">&nbsp;</td>
+          </tr>
+          <tr>
+            <td class="confluenceTd"> Dain Sundstrom </td>
+            <td class="confluenceTd"> dain </td>
+            <td class="confluenceTd"><span class="nobr"><a href="http://gluecode.com" rel="nofollow">GlueCode</a></span></td>
+          </tr>
+          <tr>
+            <td class="confluenceTd"> Darwin Flores </td>
+            <td class="confluenceTd"> dflores </td>
+            <td class="confluenceTd"><span class="nobr"><a href="http://logicblaze.com" rel="nofollow">LogicBlaze</a></span></td>
+          </tr>
+          <tr>
+            <td class="confluenceTd"> David Jencks</td>
+            <td class="confluenceTd"> djencks </td>
+            <td class="confluenceTd"><span class="nobr"><a href="http://gluecode.com" rel="nofollow">GlueCode</a></span></td>
+          </tr>
+          <tr>
+            <td class="confluenceTd"> Dennis Cook </td>
+            <td class="confluenceTd"> dcook </td>
+            <td class="confluenceTd"><span class="nobr"><a href="http://bevocal.com" rel="nofollow">BeVocal</a></span></td>
+          </tr>
+          <tr>
+            <td class="confluenceTd"> Frederick Oconer </td>
+            <td class="confluenceTd"> foconer </td>
+            <td class="confluenceTd"><span class="nobr"><a href="http://logicblaze.com" rel="nofollow">LogicBlaze</a></span></td>
+          </tr>
+          <tr>
+            <td class="confluenceTd"> Geir Magnusson Jr. </td>
+            <td class="confluenceTd"> geir </td>
+            <td class="confluenceTd"><span class="nobr"><a href="http://gluecode.com" rel="nofollow">GlueCode</a></span></td>
+          </tr>
+          <tr>
+            <td class="confluenceTd"> Greg Wilkins </td>
+            <td class="confluenceTd"> gregw </td>
+            <td class="confluenceTd"><span class="nobr"><a href="http://mortbay.com" rel="nofollow">MortBay</a></span></td>
+          </tr>
+          <tr>
+            <td class="confluenceTd"> Hiram Chirino </td>
+            <td class="confluenceTd"> chirino </td>
+            <td class="confluenceTd"><span class="nobr"><a href="http://logicblaze.com" rel="nofollow">LogicBlaze</a></span></td>
+          </tr>
+          <tr>
+            <td class="confluenceTd"> Jason van Zyl </td>
+            <td class="confluenceTd"> jason </td>
+            <td class="confluenceTd"><span class="nobr"><a href="http://mergere.com" rel="nofollow">Mergere</a></span></td>
+          </tr>
+          <tr>
+            <td class="confluenceTd"> Joe Walnes </td>
+            <td class="confluenceTd"> joe </td>
+            <td class="confluenceTd"><span class="nobr"><a href="http://www.thoughtworks.com" rel="nofollow">ThoughtWorks</a></span></td>
+          </tr>
+          <tr>
+            <td class="confluenceTd"> Jonas Lim </td>
+            <td class="confluenceTd"> jlim </td>
+            <td class="confluenceTd"><span class="nobr"><a href="http://logicblaze.com" rel="nofollow">LogicBlaze</a></span></td>
+          </tr>
+          <tr>
+            <td class="confluenceTd"> Joseph Gapuz </td>
+            <td class="confluenceTd"> jgapuz </td>
+            <td class="confluenceTd"><span class="nobr"><a href="http://logicblaze.com" rel="nofollow">LogicBlaze</a></span></td>
+          </tr>
+          <tr>
+            <td class="confluenceTd"> James Strachan </td>
+            <td class="confluenceTd">jstrachan</td>
+            <td class="confluenceTd"><span class="nobr"><a href="http://logicblaze.com" rel="nofollow">LogicBlaze</a></span></td>
+          </tr>
+          <tr>
+            <td class="confluenceTd"> Max Kington </td>
+            <td class="confluenceTd"> mkington </td>
+            <td class="confluenceTd"><span class="nobr"><a href="http://betfair.com" rel="nofollow">BetFair</a></span></td>
+          </tr>
+          <tr>
+            <td class="confluenceTd"> Merwin Yap </td>
+            <td class="confluenceTd"> myap </td>
+            <td class="confluenceTd"><span class="nobr"><a href="http://logicblaze.com" rel="nofollow">LogicBlaze</a></span></td>
+          </tr>
+          <tr>
+            <td class="confluenceTd"> Michael Gaffney </td>
+            <td class="confluenceTd"> mgaffney </td>
+            <td class="confluenceTd"><span class="nobr"><a href="http://www.panacya.com" rel="nofollow">Panacya</a></span></td>
+          </tr>
+          <tr>
+            <td class="confluenceTd"> Patrick Villacorta </td>
+            <td class="confluenceTd"> pvillacorta </td>
+            <td class="confluenceTd"><span class="nobr"><a href="http://logicblaze.com" rel="nofollow">LogicBlaze</a></span></td>
+          </tr>
+          <tr>
+            <td class="confluenceTd"> Peter Brooke </td>
+            <td class="confluenceTd"> pbrooke </td>
+            <td class="confluenceTd"> Prepulse </td>
+          </tr>
+          <tr>
+            <td class="confluenceTd"> Ramzi Saba </td>
+            <td class="confluenceTd"> rsaba </td>
+            <td class="confluenceTd"><span class="nobr"><a href="http://www.optaros.com" rel="nofollow">Optaros</a></span></td>
+          </tr>
+          <tr>
+            <td class="confluenceTd"> Rob Davies </td>
+            <td class="confluenceTd"> rajdavies </td>
+            <td class="confluenceTd">&nbsp;</td>
+          </tr>
+          <tr>
+            <td class="confluenceTd"> Tatu Saloranta </td>
+            <td class="confluenceTd"> cowtowncoder </td>
+            <td class="confluenceTd">&nbsp;</td>
+          </tr>
+        </tbody>
+      </table>
+    </p>
+    <h3><a name="Team-Contributors"></a>Contributors</h3>
+    <p class="paragraph">
+      <table class="confluenceTable">
+        <tbody>
+          <tr>
+            <th class="confluenceTh">Name</th>
+            <th class="confluenceTh">Organisation</th>
+          </tr>
+          <tr>
+            <td class="confluenceTd"> Al Maw </td>
+            <td class="confluenceTd">&nbsp;</td>
+          </tr>
+          <tr>
+            <td class="confluenceTd"> Andy Depue </td>
+            <td class="confluenceTd">&nbsp;</td>
+          </tr>
+          <tr>
+            <td class="confluenceTd"> Barry Kaplan </td>
+            <td class="confluenceTd">&nbsp;</td>
+          </tr>
+          <tr>
+            <td class="confluenceTd"> Brian Guan </td>
+            <td class="confluenceTd">&nbsp;</td>
+          </tr>
+          <tr>
+            <td class="confluenceTd"> Chris Kingsbury </td>
+            <td class="confluenceTd"><span class="nobr"><a href="http://www.tradingscreen.com" rel="nofollow">TradingScreen</a></span></td>
+          </tr>
+          <tr>
+            <td class="confluenceTd"> Charles Anthony </td>
+            <td class="confluenceTd">&nbsp;</td>
+          </tr>
+          <tr>
+            <td class="confluenceTd"> Erik Onnen </td>
+            <td class="confluenceTd">&nbsp;</td>
+          </tr>
+          <tr>
+            <td class="confluenceTd"> Glen Klyuzner </td>
+            <td class="confluenceTd"><span class="nobr"><a href="http://www.tullib.com" rel="nofollow">Tullib</a></span></td>
+          </tr>
+          <tr>
+            <td class="confluenceTd"> Hakan Guleryuz </td>
+            <td class="confluenceTd"> ASPone </td>
+          </tr>
+          <tr>
+            <td class="confluenceTd"> Jason Anderson </td>
+            <td class="confluenceTd">&nbsp;</td>
+          </tr>
+          <tr>
+            <td class="confluenceTd"> Jeff Sparkes </td>
+            <td class="confluenceTd">&nbsp;</td>
+          </tr>
+          <tr>
+            <td class="confluenceTd"> Jeremy Volkman </td>
+            <td class="confluenceTd">&nbsp;</td>
+          </tr>
+          <tr>
+            <td class="confluenceTd"> Leo Pechersky </td>
+            <td class="confluenceTd">&nbsp;</td>
+          </tr>
+          <tr>
+            <td class="confluenceTd"> Li Ma </td>
+            <td class="confluenceTd">&nbsp;</td>
+          </tr>
+          <tr>
+            <td class="confluenceTd"> Mark Bucayan </td>
+            <td class="confluenceTd">&nbsp;</td>
+          </tr>
+          <tr>
+            <td class="confluenceTd"> Mark Timmings </td>
+            <td class="confluenceTd">&nbsp;</td>
+          </tr>
+          <tr>
+            <td class="confluenceTd"> Mats Henricson </td>
+            <td class="confluenceTd">&nbsp;</td>
+          </tr>
+          <tr>
+            <td class="confluenceTd"> Matt Hoffman </td>
+            <td class="confluenceTd">&nbsp;</td>
+          </tr>
+          <tr>
+            <td class="confluenceTd"> Matthew Vincent </td>
+            <td class="confluenceTd">&nbsp;</td>
+          </tr>
+          <tr>
+            <td class="confluenceTd"> Mike Perham </td>
+            <td class="confluenceTd">&nbsp;</td>
+          </tr>
+          <tr>
+            <td class="confluenceTd"> Neil Clayton </td>
+            <td class="confluenceTd"><span class="nobr"><a href="http://www.rbs.co.uk/CBFM" rel="nofollow">Royal Bank of Scotland</a></span></td>
+          </tr>
+          <tr>
+            <td class="confluenceTd"> Nick Reid </td>
+            <td class="confluenceTd"><span class="nobr"><a href="http://www.evolution.net" rel="nofollow">Evolution</a></span></td>
+          </tr>
+          <tr>
+            <td class="confluenceTd"> Niklas Gustavsson </td>
+            <td class="confluenceTd">&nbsp;</td>
+          </tr>
+          <tr>
+            <td class="confluenceTd"> Oliver Belikan </td>
+            <td class="confluenceTd">&nbsp;</td>
+          </tr>
+          <tr>
+            <td class="confluenceTd"> Paul Smith </td>
+            <td class="confluenceTd">&nbsp;</td>
+          </tr>
+          <tr>
+            <td class="confluenceTd"> Paul Wai </td>
+            <td class="confluenceTd">&nbsp;</td>
+          </tr>
+          <tr>
+            <td class="confluenceTd"> Pawel Tucholski </td>
+            <td class="confluenceTd">&nbsp;</td>
+          </tr>
+          <tr>
+            <td class="confluenceTd"> Peter Henning </td>
+            <td class="confluenceTd">&nbsp;</td>
+          </tr>
+          <tr>
+            <td class="confluenceTd"> Ross Mason </td>
+            <td class="confluenceTd">&nbsp;</td>
+          </tr>
+          <tr>
+            <td class="confluenceTd"> Robin Roos </td>
+            <td class="confluenceTd"><span class="nobr"><a href="http://www.drkw.com/" rel="nofollow">Dresdner Kleinwort Wasserstein</a></span></td>
+          </tr>
+          <tr>
+            <td class="confluenceTd"> Sami Dalouche </td>
+            <td class="confluenceTd">&nbsp;</td>
+          </tr>
+          <tr>
+            <td class="confluenceTd"> Thomas Heller </td>
+            <td class="confluenceTd">&nbsp;</td>
+          </tr>
+        </tbody>
+      </table>
+    </p>
+  </div>
+</div>
+
+          &nbsp;
+        </td>
+      </tr>
+      <tr>
+        <td colspan="3" id="footer">
+          <table width="100%"> 
+            <tr>
+              <td align="left" valign="top">
+          
+              </td>
+              <td align="right" valign="top">
+          <a style="color:#999;" href="http://docs.codehaus.org/pages/editpage.action?spaceKey=ACTIVEMQ&title=Team">[ edit ]</a>
+              </td>
+            </tr>
+          <table>
+        </td>
+      </tr>
+    </table>
+  </body>
+
+</html>
+
+

Added: incubator/activemq/site/Terminology
URL: http://svn.apache.org/viewcvs/incubator/activemq/site/Terminology?rev=374430&view=auto
==============================================================================
--- incubator/activemq/site/Terminology (added)
+++ incubator/activemq/site/Terminology Thu Feb  2 08:31:10 2006
@@ -0,0 +1,290 @@
+
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
+<html>
+  <head>
+    <link rel="stylesheet" href="site.css" type="text/css">
+
+
+
+    <title>ActiveMQ - Terminology</title>
+  </head>
+
+  <body>
+    <table width="100%" id="layout" style="padding:0px;margin0px;border-collapse:collapse;">
+      <tr>
+        <td colspan="3" style="padding:8px;">
+          <table width="100%" id="banner" style="padding:0px;margin:0px">
+            <tr id="header_row">
+              <td align="left" valign="middle" style="padding:0px;margin:0px;">
+                <span id="Content"><span><span class="nobr"><a href="http://incubator.apache.org/activemq" rel="nofollow"><img align="absmiddle" border=0 src="images/logo.gif"></a></span></span></span>
+
+              </td>
+              
+            </tr>
+          </table>
+        </td>
+      </tr>
+      <tr>
+        <td colspan="3" id="breadcrumbs">
+          <table width="100%" id="banner" style="padding:0px;margin:0px">
+            <tr>
+              <td align="left">
+                <a href="">Home</a>  | <a href="FAQ">FAQ</a> &gt; Terminology
+              </td>
+              <td align="right">
+                  <span id="Content"><span><a href="Download" title="Download">Download</a> | <span class="nobr"><a href="http://activemq.codehaus.org/maven/apidocs/" rel="nofollow">JavaDocs for 4.x</a></span> <span class="nobr"><a href="http://activemq.org/maven/activemq-3/activemq-core/apidocs/" rel="nofollow">3.x</a></span> | <a href="Source" title="Source">Source</a> | <span class="nobr"><a href="http://docs.codehaus.org/pages/listpages.action?key=ACTIVEMQ" rel="nofollow">Wiki</a></span> |<span class="nobr"><a href="irc://irc.codehaus.org/activemq" rel="nofollow">IRC</a></span> | <span class="nobr"><a href="http://servlet.uwyn.com/drone/log/hausbot/activemq" rel="nofollow">IRC Log</a></span> | <a href="Mailing+Lists" title="Mailing Lists">Mailing Lists</a> | <span class="nobr"><a href="http://forums.logicblaze.com/forums/show/1.page" rel="nofollow">Discussion Forum</a></span> | <span class="nobr"><a href="http://jira.logicblaze.com/jira/browse/AMQ" rel="nofollow">Support
 </a></span></span></span>
+
+              </td>
+            </tr>
+          </table>
+        </td>
+      </tr>
+      <tr>
+        <td id="leftColumn" valign="top" style="padding-top: 0px;">
+          <span id="Content"><h3><a name="Navigation-Overview"></a>Overview</h3>
+  <ul class="alternate" type="square">
+    <li><a href="Home" title="Home">Home</a></li>
+    <li><a href="News" title="News">News</a></li>
+    <li><a href="Changes+in+4.0" title="Changes in 4.0">New in 4.0</a></li>
+    <li><a href="FAQ" title="FAQ">FAQ</a></li>
+    <li><a href="Articles" title="Articles">Articles</a></li>
+    <li><a href="Download" title="Download">Download</a></li>
+  </ul>
+  <h3><a name="Navigation-Community"></a>Community</h3>
+  <ul class="alternate" type="square">
+    <li><span class="nobr"><a href="http://forums.logicblaze.com/forums/show/1.page" rel="nofollow">Discussion Forum</a></span></li>
+    <li><a href="Mailing+Lists" title="Mailing Lists">Mailing Lists</a></li>
+    <li><span class="nobr"><a href="http://gmane.org/find.php?list=activemq" rel="nofollow">News Reader</a></span></li>
+    <li><span class="nobr"><a href="http://docs.codehaus.org/pages/listpages.action?key=ACTIVEMQ" rel="nofollow">Wiki</a></span></li>
+    <li><a href="Projects+Using+ActiveMQ" title="Projects Using ActiveMQ">Projects Using ActiveMQ</a></li>
+    <li><a href="Users" title="Users">Users</a></li>
+    <li><a href="Contributing" title="Contributing">Contributing</a></li>
+    <li><a href="Team" title="Team">Team</a></li>
+  </ul>
+  <h3><a name="Navigation-UsingActiveMQ"></a>Using ActiveMQ</h3>
+  <ul class="alternate" type="square">
+    <li><a href="Getting+Started" title="Getting Started">Getting Started</a></li>
+    <li><a href="Installation" title="Installation">Installation</a></li>
+    <li><a href="Building" title="Building">Building</a></li>
+    <li><a href="Run+Broker" title="Run Broker">Running a Broker</a></li>
+    <li><a href="Examples" title="Examples">Examples</a></li>
+    <li><a href="How+can+I+monitor+ActiveMQ" title="How can I monitor ActiveMQ">Monitoring the Broker</a></li>
+    <li><a href="Xml+Configuration" title="Xml Configuration">Xml Configuration</a></li>
+    <li><a href="Xml+Reference" title="Xml Reference">Xml Reference</a></li>
+    <li><a href="Use+Cases" title="Use Cases">Use Cases</a></li>
+    <li><a href="Topologies" title="Topologies">Topologies</a></li>
+    <li><a href="Configuring+Transports" title="Configuring Transports">Configuring Transports</a></li>
+    <li><a href="How+do+I+embed+a+Broker+inside+a+Connection" title="How do I embed a Broker inside a Connection">Embedded Brokers</a></li>
+    <li><a href="JMeter+Performance+Tests" title="JMeter Performance Tests">Performance Testing</a></li>
+    <li><a href="Web+Samples" title="Web Samples">Web Samples</a></li>
+    <li><a href="Hello+World" title="Hello World">Hello World</a></li>
+  </ul>
+  <h3><a name="Navigation-Features"></a>Features</h3>
+  <ul class="alternate" type="square">
+    <li><a href="JMX" title="JMX">JMX</a></li>
+    <li><a href="Performance" title="Performance">Performance</a></li>
+    <li><a href="Protocols" title="Protocols">Protocols</a></li>
+    <li><a href="Persistence" title="Persistence">Persistence</a></li>
+    <li><a href="JDBC+Support" title="JDBC Support">JDBC Support</a></li>
+    <li><a href="Clustering" title="Clustering">Clustering</a></li>
+    <li><a href="Discovery" title="Discovery">Discovery</a></li>
+    <li><a href="Networks+of+Brokers" title="Networks of Brokers">Networks of Brokers</a></li>
+    <li><a href="Composite+Destinations" title="Composite Destinations">Composite Destinations</a></li>
+    <li><a href="JMS+Streams" title="JMS Streams">JMS Streams</a></li>
+    <li><a href="Advisory+Message" title="Advisory Message">Advisory Message</a></li>
+    <li><a href="Resource+Adapter" title="Resource Adapter">JCA 1.5 Resource Adapter</a></li>
+  </ul>
+  <h3><a name="Navigation-Connectivitiy"></a>Connectivitiy</h3>
+  <ul class="alternate" type="square">
+    <li><a href="Ajax" title="Ajax">Ajax</a></li>
+    <li><a href="Axis+Support" title="Axis Support">Axis Support</a></li>
+    <li><a href="C+Integration" title="C Integration">C Integration</a></li>
+    <li><a href="dot+Net" title="dot Net">.Net Integration</a></li>
+    <li><a href="Geronimo" title="Geronimo">Geronimo</a></li>
+    <li><a href="J2EE" title="J2EE">J2EE</a></li>
+    <li><a href="JBoss+Integration" title="JBoss Integration">JBoss Integration</a></li>
+    <li><a href="JNDI+Support" title="JNDI Support">JNDI Support</a></li>
+    <li><a href="OpenWire" title="OpenWire">OpenWire</a></li>
+    <li><a href="REST" title="REST">REST</a></li>
+    <li><a href="Spring+Support" title="Spring Support">Spring Support</a></li>
+    <li><a href="Stomp" title="Stomp">Stomp</a></li>
+    <li><a href="Tomcat" title="Tomcat">Tomcat</a></li>
+    <li><a href="WSIF" title="WSIF">WSIF</a></li>
+  </ul>
+  <h3><a name="Navigation-Utilities"></a>Utilities</h3>
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+    <li><a href="JCA+Container" title="JCA Container">JCA Container</a></li>
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+    <li><span class="nobr"><a href="http://jakarta.apache.org/jmeter" rel="nofollow">JMeter</a></span></li>
+  </ul>
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+    <li><span class="nobr"><a href="http://stomp.codehaus.org/" rel="nofollow">Stomp</a></span></li>
+    <li><span class="nobr"><a href="http://activecluster.codehaus.org/" rel="nofollow">ActiveCluster</a></span></li>
+    <li><span class="nobr"><a href="http://activespace.codehaus.org/" rel="nofollow">ActiveSpace</a></span></li>
+    <li><span class="nobr"><a href="http://activesoap.codehaus.org/" rel="nofollow">ActiveSOAP</a></span></li>
+    <li><span class="nobr"><a href="http://www.springframework.org/" rel="nofollow">Spring</a></span></li>
+    <li><span class="nobr"><a href="http://geronimo.apache.org/" rel="nofollow">Geronimo</a></span></li>
+  </ul>
+  <h3><a name="Navigation-Support"></a>Support</h3>
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+    <li><span class="nobr"><a href="http://jira.logicblaze.com/jira/browse/AMQ?report=com.atlassian.jira.plugin.system.project:changelog-panel" rel="nofollow">Change log</a></span></li>
+  </ul>
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+    <li><a href="Integration+Tests" title="Integration Tests">Integration Tests</a></li>
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+  </ul>
+  <h3><a name="Navigation-Toolsweuse"></a>Tools we use</h3><span><span class="nobr"><a href="http://www.yourkit.com" rel="nofollow"><img align="absmiddle" border=0 src="/download/attachments/23786/yourkit.jpg"></a></span></span></span>
+
+            <h3 class="heading3">Feeds</h3>
+            <table border="0" cellspacing="4px">
+            <tr>
+              <td align="right">
+                <a href="http://docs.codehaus.org/spaces/rss.action?key=ACTIVEMQ&newPages=false"><img src="http://docs.codehaus.org/images/icons/rss.gif" border="0"></a><br/>
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+                <a href="http://docs.codehaus.org/spaces/rss.action?key=ACTIVEMQ&newPages=false">Site</a>
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+        <td id="rightColumn" valign="top">
+
+          <div id="page_title">
+            <table width="100%">
+              <tr>
+                <td>
+            Terminology 
+                </td>
+                <td align="right">
+            
+                </td>
+              </tr>
+            </table>
+          </div>
+
+
+          <div>
+  <div id="Content">
+    <p>Questions on Message Orientated Middleware and ActiveMQ terminology</p>
+    <ul>
+      <li><a href="DR" title="DR">DR</a></li>
+      <li><a href="HA" title="HA">HA</a></li>
+      <li><a href="Latency" title="Latency">Latency</a></li>
+      <li><a href="MOM" title="MOM">MOM</a></li>
+      <li><a href="QoS" title="QoS">QoS</a></li>
+      <li><a href="SEDA" title="SEDA">SEDA</a></li>
+      <li><a href="Throughput" title="Throughput">Throughput</a></li>
+    </ul>
+    <h3><a name="Terminology-StoreandForward"></a>Store and Forward</h3>
+    <p>brokers receive messages, store them locally and forwards the message to a recipient (in this case another broker) when it is able to do so. The message is only deleted once its been sucessfully delivered.</p>
+    <h3><a name="Terminology-Reliablemessaging"></a>Reliable messaging</h3>
+    <p>Best efforts are made to deliver a message whilst the system (broker/cluster/network) is running.</p>
+    <h3><a name="Terminology-Guaranteed"></a>Guaranteed</h3>
+    <p>No matter what happens to the physical network connections or the destination service the message will be delivered to the receiptant - provided there is no catastraphic loss to the persistent data store of a broker along the message(s) route. This means a message could be lost if there was a catastrophic failure to a broker's activemq data disk.</p>
+    <h3><a name="Terminology-FaultTolerance"></a>Fault Tolerance</h3>
+    <p>Unexpected failures never lead to lost or corrupted data - for a messaging system - there are additional caveats for corrupted data - message ordering and once and only once message delivery.</p>
+    <h3><a name="Terminology-NetworkOrphan"></a>Network Orphan</h3>
+    <p>A broker can become isolated from other brokers in the cluster due to an network outage. The broker and it's connected clients may not be able to detect if the loss of other brokers in the cluster is due to the broker(or their machines) or simply a router/cable problem. This is a big issue for clustering, as it has the potential to create corrupted data exchanges when the network is re-established.</p>
+    <h3><a name="Terminology-Clustering"></a>Clustering</h3>
+    <p>multiple brokers are used to provide a single logical service. <br> There are three reasons for using clustering:</p>
+    <h5><a name="Terminology-Increasedcapacity"></a>Increased capacity</h5>
+    <p>This is load balancing - this is currently achived by networking brokers together - this won't change in ActiveMQ 4.0 (see below).</p>
+    <h5><a name="Terminology-GeographicalDistribution"></a>Geographical Distribution</h5>
+    <p>Again this is achived in ActiveMQ by broker networks.</p>
+    <h5><a name="Terminology-HighAvailability"></a>High Availability</h5>
+    <p>The guarenteed maximum amount of downtime that will not be exceeded:</p>
+    <p class="paragraph">
+      <table class="confluenceTable">
+        <tbody>
+          <tr>
+            <th class="confluenceTh">Uptime</th>
+            <td class="confluenceTd"> Average Down time </td>
+            <td class="confluenceTd"> implications </td>
+          </tr>
+          <tr>
+            <td class="confluenceTd">95% </td>
+            <td class="confluenceTd"> 8 hours a week </td>
+            <td class="confluenceTd"> System will be offline for nightly backups a broker loss could result in loss of all messages since last back-up</td>
+          </tr>
+          <tr>
+            <td class="confluenceTd">99%</td>
+            <td class="confluenceTd"> 1.5 hours a week</td>
+            <td class="confluenceTd"> system maybe offline for backup or maintenance</td>
+          </tr>
+          <tr>
+            <td class="confluenceTd">99.9%</td>
+            <td class="confluenceTd"> 40 mins/month</td>
+            <td class="confluenceTd"> all back-ups done online</td>
+          </tr>
+          <tr>
+            <td class="confluenceTd">99.999% </td>
+            <td class="confluenceTd"> 5 mins/year</td>
+            <td class="confluenceTd"> full redundancy</td>
+          </tr>
+        </tbody>
+      </table>
+    </p>
+    <h5><a name="Terminology-Architecturebasics"></a>Architecture basics</h5>
+    <p>Clusters can be either based around shared storage (sharted database or disk) or shared nothing (every broker has their own provate storage). There is also two basic mechanisms used for message integrity for failure scenarios:</p>
+    <h6><a name="Terminology-Master%2FSlave"></a>Master/Slave</h6>
+    <p>A broker has a standby replacement - another broker that is kept in step by the cluster that will take over in the event of a broker failure.</p>
+    <h6><a name="Terminology-Synchronous"></a>Synchronous</h6>
+    <p>Every broker is kept exactly in-step with message exchanges across the entire cluster. This is the most secure for failure scenrios, but suffers from performance problems because it the responsibility of the cluster to ensure that messages are fully replicated across every node. This results in higher latency and increased traffic. In practice, it is unsual to have more than 2 brokers in such a cluster, because the performance degradation is directly related to the number of brokers in the cluster.</p>
+    <h6><a name="Terminology-Hybrid"></a>Hybrid</h6>
+    <p>A fully synchronous cluster, but it is the responsibility of the client (not the brokers) to ensure every broker is kept up to date. This has advantages for performance, but is complicated by the additional exchange between client and broker(s) to ensure that only one broker does the message dispatching for a client.</p>
+  </div>
+</div>
+
+          &nbsp;
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