[jboss-dev-forums] [Design of Messaging on JBoss (Messaging/JBoss)] - discarding consumer messages.

[ataylor]

This is regarding https://jira.jboss.org/jira/browse/JBMESSAGING-1214.

If you consider the example where a consumer is receiving messages regarding a stock price then these messages are transitory. The consumer is only really interested in the newest messages. If the consumer is slow then these messages could build up and the information being received out of date. It should be possible to set the max number of messages to keep.

My first thought is to do this in the server consumer. during the handle method if maxNumberOfMessages is set we check how many messages the queue has and if greater we we pre ack the message without delivering and return handled. The one thing I'm not sure of is how this would work with filters since only a subset of the queue may be destined for this consumer. thoughts?

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