这些未提交事务必须被回滚(roll back)以保证事务一致性(transactional consistency)。这些未提交事务可能是在实例故障发生前被写入数据文件的,也可能是在执行前滚被写入数据文件的。
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Then, this article proposes the databases disaster plan. Secondly, above the cooperative model foundation, using the Web services analysis and design method,this article proposes the model’s optimized design, proposal in view of the coupling and transactional consistency.
其次,在协作模型基础之上,本文采用面向Web服务的分析与设计方法,针对耦合性和事务一致性问题提出了协作模型的优化设计方案。
参考来源 - 快运企业协同信息平台设计与应用研究·2,447,543篇论文数据,部分数据来源于NoteExpress
如果事务一致性和可用性都是必需的,那么将进一步缩小可选择的范围。
If both transactional consistency and availability are required, then this may further narrow the choices.
另一方面,如果事务一致性是关键需求,那么则需要选择更加同步的解决方案。
On the other hand, if transactional consistency is a key requirement, then a more synchronous option is required.
通常,HA解决方案的设计由两个因素驱动,正常运行时间(uptime)需求和事务一致性。
In general, HA solution design is driven by two factors, uptime requirements and transactional consistency.
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