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From gchakra <gopal.chakravar...@fox.com>
Subject How do I configure a automatic expiration for DLQ
Date Fri, 17 Oct 2014 17:17:18 GMT
1.For the dead letter queue ActiveMQ.DLQ, I would like to configure a policy
whereby messages in DLQ get deleted after they have resided in DLQ for 5
days.
I couldnt see how to do it in the documentation.
My current activemq.xml configuration file is below...how do I modify it for
autoexpiring my DLQ messages after 5 days...


<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-2.0.xsd
http://activemq.apache.org/schema/core
http://activemq.apache.org/schema/core/activemq-core.xsd">
	<bean
class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
		<property name="locations">
			<value>file:${activemq.base}/conf/credentials.properties</value>
		</property>
	</bean>
	<broker xmlns="http://activemq.apache.org/schema/core"
brokerName="localhost" dataDirectory="${activemq.base}/data"
destroyApplicationContextOnStop="true">
		<destinationPolicy>
			<policyMap>
				<policyEntries>
					<policyEntry topic=">" producerFlowControl="false" memoryLimit="1mb"
useCache="false">
						<pendingSubscriberPolicy>
							<vmCursor />
						</pendingSubscriberPolicy>
					</policyEntry>
					<policyEntry queue=">" producerFlowControl="false" memoryLimit="1mb"
useCache="false">
						<dispatchPolicy>
							<roundRobinDispatchPolicy />
						</dispatchPolicy>
					</policyEntry>
				</policyEntries>
			</policyMap>
		</destinationPolicy>
		<managementContext>
			<managementContext createConnector="false"/>
		</managementContext>
		<persistenceAdapter>
			<kahaDB directory="${activemq.base}/data/kahadb"
ignoreMissingJournalfiles="true" checkForCorruptJournalFiles="true"
checksumJournalFiles="true" journalMaxFileLength="64mb" />
		</persistenceAdapter>
		<transportConnectors>
			<transportConnector name="openwire" uri="tcp://0.0.0.0:61616"/>
		</transportConnectors>
	</broker>
	<import resource="jetty.xml"/>
</beans>


2. What is the impact of adding the following plugin to the broker in
activemq.xml configuration XML
<broker xmlns="http://activemq.apache.org/schema/core"
brokerName="localhost" dataDirectory="$
{activemq.base}/data" destroyApplicationContextOnStop="true">
<plugins>
<discardingDLQBrokerPlugin dropAll="true" dropTemporaryTopics="true"
dropTemporaryQueues="true" />
</plugins>
</broker>





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