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http://activemq.apache.org/what-is-the-difference-between-persistent-and-non-persistent-delivery.html
What is the difference between persistent and non-persistent delivery? ActiveMQ supports both persistent and non-persistent delivery. As per the JMS specification, the default delivery mode is persistent. The persistence flag is set on the MessageProducer for all messages using the setDeliveryMode.
https://milestonenext.blogspot.com/2013/09/activemq-configuration-for-persistent.html
When broker is configured with "persistent=false", then ActiveMQ persists no messges at all in DB even if client set delivery mode as "persistent". Running in "persistent=false" mode, ActiveMQ use default MemoryPersistenceAdapter. All messages resides in ActiveMQ' system memory.Author: Beijing Beijing
https://stackoverflow.com/questions/42687720/activemq-non-persistent-delivery-mode-limitations
If non-persistent delivery mode is not sufficient with my above requirements, is there any performance tuning tips with which I can achieve my requirements with persistent delivery mode (tcp://). I have already tested with this mode, but it seems consumers are very slow here.
https://docs.oracle.com/javaee/6/api/javax/jms/DeliveryMode.html
NON_PERSISTENT static final int NON_PERSISTENT This is the lowest-overhead delivery mode because it does not require that the message be logged to stable storage. The level of JMS provider failure that causes a NON_PERSISTENT message to be lost is not defined. A JMS provider must deliver a NON_PERSISTENT message with an at-most-once guarantee ...
https://activemq.apache.org/performance-tuning
So if you looking for good performance with topic messages, either set the delivery mode on the publisher to be non-persistent, or set the useAsyncSend property on the ActiveMQ ConnectionFactory to be true. Pre-fetch Sizes for Consumers
https://stackoverflow.com/questions/43459812/difference-between-persistent-and-non-persistent-delivery
I read following ActiveMQ FAQ and my understanding from this is that suppose I am sending a message to my ActiveMQ server while ActiveMQ server is down, but if I have marked my producer's delivery mode as persistent producer.setDeliveryMode(DeliveryMode.NON_PERSISTENT); then message will be delivered once the ActiveMQ server is up.
https://grokbase.com/t/activemq/users/0839mwdrs6/activemq-persistence-delivery-mode
(1 reply) hi I am observing the following behaviour with ActiveMq 5.0 release and I was wondering if someone can tell me if this is expected or a bug I have a single broker with one producer and a durable subscriber. All on one machine. I am using a single Topic for publish and subscribe. The session is set to AUTO_ACKNOWLEDGE and transacted is FALSE 1)When I publish a single message to the ...
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