I have a MDB configured as shown below. I am sending a large number of messages
to the MDB and do not require persistent queue. Searching the forum I found
several suggestion to set DeliveryMode.NON_PERSISTENT, yet when I use the HSQL
Database Manager I still find entries created in the JMS_Messages table.
Ideally I would like to avoid any kind of persistence to achieve a performance
gain. My requirements do not require persistence for this service.
| ...
| @MessageDriven(name =
"LogMessageProcessor",mappedName="LogMessageProcessor", activationConfig = {
| @ActivationConfigProperty(propertyName = "acknowledgeMode",
propertyValue = "Auto-acknowledge"),
| @ActivationConfigProperty(propertyName = "destinationType",
propertyValue = "javax.jms.Queue"),
| @ActivationConfigProperty(propertyName = "destination", propertyValue =
"queue/LogMessageProcessors"),
| @ActivationConfigProperty(propertyName = "maxSession", propertyValue =
"5"),
| @ActivationConfigProperty(propertyName = "maxMessages",
propertyValue="5"),
| @ActivationConfigProperty(propertyName = "subscriptionDurability",
propertyValue="Non-Durable")
| })
| public class LogMessageProcessor implements MessageListener
| ...
|
| Properties properties = new Properties();
| properties.put(Context.INITIAL_CONTEXT_FACTORY,
"org.jnp.interfaces.NamingContextFactory");
| properties.put(Context.URL_PKG_PREFIXES, "jboss.naming:org.jnp.interfaces");
| properties.put(Context.PROVIDER_URL, "jnp://localhost:1100");
| InitialContext ctx = new InitialContext(properties);
| Queue queue = (Queue) ctx.lookup("/queue/LogMessageProcessors");
|
| QueueConnectionFactory factory = (QueueConnectionFactory)
ctx.lookup("ConnectionFactory");
| cnn = factory.createQueueConnection();
| sess = cnn.createQueueSession(false, QueueSession.AUTO_ACKNOWLEDGE);
| MapMessage msg = sess.createMapMessage();
|
| QueueConnection connection = factory.createQueueConnection();
| QueueSession session = connection.createQueueSession(false,
QueueSession.AUTO_ACKNOWLEDGE);
| QueueSender sender = session.createSender(queue);
| sender.setDeliveryMode(DeliveryMode.NON_PERSISTENT);
| for (int index=0; index<2000; index++)
| {
| ObjectMessage message = session.createObjectMessage();
| LogMessage logMessage = new LogMessage();
| logMessage.setMessage("Log Message : "+System.currentTimeMillis());
| message.setObject(logMessage);
| message.setJMSDeliveryMode(DeliveryMode.NON_PERSISTENT);
| sender.send(message,DeliveryMode.NON_PERSISTENT,10,20000);
| //logger.log(Level.INFO,"Dispatched message :
"+logMessage.getMessage());
| }
|
| sender.close();
| session.close();
| connection.close();
|
Any assistance in improving the performance and avoid persisting the messages
will help me a lot. Thanks in advance.
alex
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