Sunday, June 21, 2009

tibrv-CM example usage scenarios

The tibrv documentation [[RV concepts]] (https://docs.tibco.com/pub/rendezvous/8.3.1_january_2011/pdf/tib_rv_concepts.pdf) has good examples of when to use Certified Messaging. (minor edits by me)

Certified delivery is appropriate when a sending program requires individual confirmation of delivery for each message it sends. For example, a traveling sales representative enters sales orders on a laptop computer, and sends them to a central office. The representative must know for certain that the order processing system has received the order he sent.

Certified delivery is also appropriate when a receiving program cannot afford to miss any messages. For example, in an application that processes orders to buy and sell inventory items, each order is important. If any orders are omitted, then inventory records are incorrect. It's like missing a incremental backup.

Certified delivery is appropriate when each message on a subject builds upon previous message (with that subject) -- in sequence. For example, a sending program updates a receiving database, contributing part of the data fields in a record, but leaving other fields of the record unchanged. The database is correct only if all updates arrive in the order they are sent.

Certified delivery is appropriate in situations of intermittent physical connectivity—such as discontinuous network connections. For example, consider an application in which several mobile laptop computers must communicate with one another. Connectivity between mobile units is sporadic, requiring persistent storage of messages until the appropriate connections are re-established.

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