一种移动数据库自适应缓存管理模型构建及应用研究  

Research on Self-Adaptive Cache Management Model of Mobile Database and Application

作　　者：朱长元[1] 刘亚军[2] 

机构地区：[1]苏州卫生职业技术学院,江苏苏州215009 [2]东南大学计算机科学与工程学院,南京210096

出　　处：《科技通报》2015年第1期166-171,共6页Bulletin of Science and Technology

基　　金：江苏省高校哲学社会科学研究基金项目(课题编号:09SJD880065)

摘　　要：针对移动计算环境,提出了移动数据库自适应缓存管理概念,给出了移动数据库自适应缓存模型。针对移动位置服务提出了弹性分组压缩位向量法,针对断接性提出了主动夭折与通知确认机制相结合法。详细给出了移动数据库自适应缓存调度算法及实现。最后通过移动手机预约挂号系统的应用验证了该方法的有效性。实际运行结果表明它能大大改善移动应用响应时间、降低系统资源开销,在支持移动位置服务及断接性等方面具有较好的性能,从而提升移动应用整体性能。Aiming at the mobile computing environment, concept of Self-Adaptive Cache Management ofMobile Database is presented and a good concept model is proposed for it. Flex Group Bit VectorCompression method is proposed to resolve Location Based Service in mobile environment and activeabort type combining with mechanism of notification acknowledgement is proposed to resolve thefrequent disconnection in mobile environment. The specification of the scheduling algorithm is alsopresented in detail. The feasibility and availability has been proved by running the policy on designedmobile online doctor reservation system. The results of the practical use show that self-adaptive databasecache management can dramatically shorten the system response time and reduce spending of systemresources, and has better performance in supporting Location Based Service and the frequentdisconnecting in mobile environment, thus effectively improve the whole performance of mobileapplication.

关 键 词：移动数据库 移动计算环境 自适应缓存管理 位置服务 断接 

分 类 号：TP311.13[自动化与计算机技术—计算机软件与理论]