摘要
考虑到工控位号历史数据时间戳递增的特点,针对已有实时数据库产品历史数据存储索引查询效率不高,磁盘空间利用率低的不足,提出了一种以B+树为索引方式,以状态链表和页式存储为管理方式的历史数据缓冲区管理方式.经过实际测试表明,基于该缓冲区管理算法的历史数据存储模块存取效率高,并发性能好,磁盘空间的利用率高,完全可以替代关系数据库作为实时数据库的历史数据存储模块.
Considering the increment of history data timestamp in real-time database,with respect to the defect that existing real-time database product are not effective at index of data and are low in storage utilization,the article proposes a B+tree based buffer management algorithm with state linked list and segmentation with paging.the result shows that the history storage module using this algorithm is good at handling history data access and concurrent requests,with good storage utilization.
出处
《计算机光盘软件与应用》
2010年第12期116-116,共1页
Computer CD Software and Application