Description of the active MQ configuration file

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Limitations under the License.
-
<!--START Snippet:example--
<beans
Xmlns= "Http://www.springframework.org/schema/beans"
Xmlns:amq= "Http://activemq.apache.org/schema/core"
Xmlns:xsi= "Http://www.w3.org/2001/XMLSchema-instance"
xsi:schemalocation= "Http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/ Spring-beans.xsd
Http://activemq.apache.org/schema/core http://activemq.apache.org/schema/core/activemq-core.xsd ">


<!--allows us to use system properties as variables on this configuration file--
<bean class= "Org.springframework.beans.factory.config.PropertyPlaceholderConfigurer" >
<property name= "Locations" >
<value>file:${activemq.conf}/credentials.properties</value>
</property>
</bean>


<!--
The <broker> element is used to configure the ActiveMQ broker.
-
<broker xmlns= "http://activemq.apache.org/schema/core" brokername= "localhost" usejmx= "true" datadirectory= "${ Activemq.data} ">


<!--
For better performances use VM cursor and small memory limit.
For more information, see:


Http://activemq.apache.org/message-cursors.html


Also, if your producer is "hanging", it's probably due to producer flow control.
For more information, see:
Http://activemq.apache.org/producer-flow-control.html
-


<destinationPolicy>
<policyMap>
<policyEntries>
<policyentry topic= ">" producerflowcontrol= "true" >
<!--the constantpendingmessagelimitstrategy is used to prevent
Slow topic consumers to block producers and affect other consumers
By limiting the number of messages that is retained
For more information, see:


Http://activemq.apache.org/slow-consumer-handling.html


-
<pendingMessageLimitStrategy>
<constantpendingmessagelimitstrategy limit= "/>"
</pendingMessageLimitStrategy>
</policyEntry>
<policyentry queue= ">" producerflowcontrol= "true" memorylimit= "1MB" >
<!--use VMS cursor for better latency
For more information, see:


Http://activemq.apache.org/message-cursors.html


<pendingQueuePolicy>
<vmQueueCursor/>
</pendingQueuePolicy>
-
<deadLetterStrategy>
<individualdeadletterstrategy
Queueprefix= "DLQ." usequeueforqueuemessages= "true"/>
</deadLetterStrategy>
</policyEntry>
</policyEntries>
</policyMap>
</destinationPolicy>




<!--
The managementcontext is used to configure how ActiveMQ are exposed in
Jmx. By default, ActiveMQ uses the MBean server, which is started by
The JVM. For more information, see:


Http://activemq.apache.org/jmx.html
-
<managementContext>
<managementcontext createconnector= "true" connectorport= "1099" jmxdomainname= "Test.domain"/>
</managementContext>


<!--
Configure message persistence for the broker. The default persistence
Mechanism is the KAHADB store (identified by the kahadb tag).
For more information, see:


Http://activemq.apache.org/persistence.html
-
<persistenceAdapter>
&LT;KAHADB directory= "${activemq.data}/kahadb"/>
</persistenceAdapter>




<!--
The Systemusage controls the maximum amount of space the broker would
Use before slowing down producers. For more information, see:
Http://activemq.apache.org/producer-flow-control.html
If using ActiveMQ embedded-the following limits could safely be used:


<systemUsage>
<systemUsage>
<memoryUsage>
<memoryusage limit= "MB"/>
</memoryUsage>
<storeUsage>
<storeusage limit= "1 GB"/>
</storeUsage>
<tempUsage>
<tempusage limit= "MB"/>
</tempUsage>
</systemUsage>
</systemUsage>
-
<systemUsage>
<systemUsage>
<memoryUsage>
<memoryusage limit= "MB"/>
</memoryUsage>
<storeUsage>
<storeusage limit= "1 GB"/>
</storeUsage>
<tempUsage>
<tempusage limit= "1 GB"/>
</tempUsage>
</systemUsage>
</systemUsage>


<!--
The transport connectors expose ActiveMQ over a given protocol to
Clients and other brokers. For more information, see:


Http://activemq.apache.org/configuring-transports.html
-
<transportConnectors>
<!--DOS protection, limit concurrent connections to $ and frame size to 100MB--
<transportconnector name= "Openwire" uri= "tcp://0.0.0.0:61616?maximumconnections=1000&amp; wireformat.maxframesize=104857600 "/>
<transportconnector name= "AMQP" uri= "amqp://0.0.0.0:5672?maximumconnections=1000&amp; wireformat.maxframesize=104857600 "/>
</transportConnectors>


<!--destroy the spring context on shutdown to stop jetty--
<shutdownHooks>
<bean xmlns= "Http://www.springframework.org/schema/beans" class= "Org.apache.activemq.hooks.SpringContextHook" />
</shutdownHooks>


</broker>


<!--
Enable Web consoles, REST and Ajax APIs and demos


Take a look at ${activemq_home}/conf/jetty.xml for more details
-
<import resource= "Jetty.xml"/>


</beans>
<!--END Snippet:example--