【摘要】 数据容灾系统要求在各种可能的事件发生后仍然能够最大限度地保证数据的可用性。由于实际情况的多样性和复杂性,系统处理各种事件的逻辑往往异常复杂。在一个可实现的数据容灾系统中,采用了状态机来对事件进行处理,保证了事件处理策略的正确性和完备性,并且使不同的事件处理策略具有独立性和互换性。更多还原

【Abstract】 Data disaster tolerant system should guarantee the availability of the data to the largest degree after all kinds of possible events.Because of the diversity and complexity of the real world,the way that the system handles various events is extremely complicated.To achieve the correctness and completeness of the event-handling strategies,the system adopts a kind of mechanism based on state-based machine to deal with the events,which can also make sure that different event-handling strategies are independent and commutative.更多还原