嵌入式内存数据库恢复机制的设计与实现

摘要

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.%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武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.