文章基本信息

标题：Real-time Optimistic Concurrency Control based on Transaction Finish Degree
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作者：Qilong, Han ; Zhongxiao, Hao
期刊名称：Journal of Computer Science
印刷版ISSN：1549-3636
出版年度：2005
卷号：1
期号：4
页码：471-476
DOI：10.3844/jcssp.2005.471.476
出版社：Science Publications
摘要：Concurrency control is one of the main issues in the studies of real-time database systems. Optimistic concurrency control algorithms have the attractive properties of being non-blocking and deadlock-free. However, they have the problems of late conflict detection and transaction restarts. Although the number of transaction restarts is reduced by dynamic adjustment of serialization order in real-time database systems, they are still some unnecessary transaction restarts. In this study, we propose a new method called Transaction Finish Degree (TFD) and a new Multiversion Optimistic Concurrency Control algorithm based on TFD (MVOCC-TFD), which can reduce the number of unnecessary restarts. Theoretical analysis and experimental results demonstrate that the new algorithm can outperform the previous ones
关键词：real-time database; concurrency; scheduling algorithm; transaction finish degree