Failure detection in a processing system
摘要:
A first processor enters a control record in a database and then selects the control record and locks it with a pessimistic lock. If the first processor finishes its operations, it deletes the control record. A subsequent processor searches for the control record and attempts to lock it with a pessimistic lock. If the subsequent processor is successful in locking the control record, it determines that the first processor has failed in performing its process, and takes desired action.
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