JMS – PTP Messaging (Magic xpi 4.5)
You use PTP messaging when every message you need to send has to be processed successfully by a single consumer. These are the main characteristics of a PTP messaging domain:
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Each message has only one consumer. 
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The message sender and receiver have no time dependencies. The receiver can fetch the message whether or not the receiver was active when the client sent the message. 
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The receiving client acknowledges the successful processing of a message.