Message/Workflow Coordination 1. What to do: Use a pair of Request-Reply (154) messages to perform a work item. Start a transaction, acquire the work item, send the request message, and then commit. Or, start another transaction, receive the reply message, complete or abort the work item, then commit. 2. What this does: The work item will not be committed unless the request is sent; the reply will not be removed unless the work item is updated. 3. Transaction type: Since the messaging system and the workflow engine each has its own transaction manager, the transaction to coordinate them will
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