| 嵌入式内存数据库恢复机制的设计与实现 |
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| 引用本文： | 袁文亮,钟宝荣,何先平.嵌入式内存数据库恢复机制的设计与实现[J].计算机应用与软件,2012(1):81-83. |
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| 作者姓名： | 袁文亮 钟宝荣 何先平 |
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| 作者单位： | 池州学院数学与计算机科学系;长江大学计算机科学学院;长江大学信息与数学学院 |
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| 基金项目： | 国家自然科学基金项目(60873021/F0201);安徽省池州学院院级科研重点项目(XK0902) |
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| 摘 要： | 根据嵌入式系统环境的特点及其恢复需要,提出一种基于逻辑日志的嵌入式内存数据库恢复子系统设计模式。该子系统采用一主两副的节点模式,保证了数据对象恢复时状态与逻辑日志写时状态的一致性。经过验证试验表明该子系统有效减少了日志信息量,缩短了系统的恢复时间,提高了系统的性能。
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| 关 键 词： | 内存数据库 逻辑日志 检验点 恢复 |
EMBEDDED MMDB RECOVERY MECHANISM DESIGN AND IMPLEMENTATION |
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| Yuan Wenliang,Zhong Baorong,He Xianping.EMBEDDED MMDB RECOVERY MECHANISM DESIGN AND IMPLEMENTATION[J].Computer Applications and Software,2012(1):81-83. |
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| Authors: | Yuan Wenliang Zhong Baorong He Xianping |
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| Affiliation: | 1(Department of Mathematics and Computer Science,Chizhou College,Chizhou 247000,Anhui,China) 2(College of Computer Science,Yangtze University,Jingzhou 434023,Hubei,China) 3(School of Information and Mathematics,Yangtze University,Jingzhou 434023,Hubei,China) |
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| Abstract: | To adapt to embedded system environment characteristics and fulfill its recovery demands,the article proposes a logical logging based embedded MMDB recovery subsystem design pattern.The subsystem follows the "one primary,two secondary" node pattern to ensure the consistency of states at data object recovery as well as at logical logging writing.Experiments validate that the subsystem effectively reduces the amount of logging information,shortens system recovery time and improves system performance. |
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| Keywords: | MMDB Logical logging Checkpoint Recovery |
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