移动分布式数据库中的实时事务处理

Real-time Transaction Processing in Mobile Distributed Database Systems

提出了移动事务实时提交协议(MTRTC)和多版本乐观并发控制协议(MVOCC)处理移动分布式实时事务。MVOCC有效性检查分为局部有效性检查和全局有效性检查,采用动态调整串行次序,避免了不必要的事务重启动,改善了只读事务的响应时间。MTRTC是一个实时提交协议,减少了通信信息。实验结果表明结合MVOCC和MTRTC事务处理协议优于其它事务处理协议。

Multiversion optimistic concurrency control（MVOCC） protocol and mobile transaction real-time commit（MTRTC） protocol are presented for mobile distributed real-time database systems（MDRTDBSs）. In MVOCC transaction, validation is performed at two levels： local validation and global validation. Dynamic adjustment of serialization order is adopted to avoid unnecessary restarts of transactions, The MTRTC is a real-time commit protocol and significantly reduces the message cost. The results of experiment show that transaction processing protocol combing MVOCC with MTRT performs better than other transaction processing protocols.