INTERVIEW QUESTIONS J2EE JMS DETAILS

Question: What is the recoverability of messages for closed consumers?

Answer: ..A: For messages consumed from a queue or durable subscription, a rollback ensures that the messages are not acknowledged and that they will be delivered to the next consumer of these persistent entities. The JMS specification states that messages delivered to non-durable subscribers may be dropped. This statement means that the JMS API does not define the recoverability of messages consumed from a non-durable subscriber.

..A: For messages consumed from a queue or durable subscription, a rollback ensures that the messages are not acknowledged and that they will be delivered to the next consumer of these persistent entities. The JMS specification states that messages delivered to non-durable subscribers may be dropped. This statement means that the JMS API does not define the recoverability of messages consumed from a non-durable subscriber. Source: CoolInterview.com

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