移动计算环境中基于广播的数据缓存策略  

New cache strategy based on broadcasting in mobile computing environments

作　　者：邵雄凯[1] 何瑜[1] 

机构地区：[1]湖北工业大学计算机学院,湖北武汉430068

出　　处：《计算机应用》2006年第2期364-367,共4页journal of Computer Applications

摘　　要：在研究了数据广播频率的变化对缓存策略的影响之后,提出以移动客户机(MobileC lient,MC)从广播中读取数据的平均响应时间为标准,来决定是否缓存该数据项。其优点是可以避免每次访问这些数据项等待较长时间,同时也可降低移动客户机缓存管理的代价,提高其工作性能。The cache strategy should not only concern the historical accessing situations of the data, but also consider the broadcasting probability of the data. After carefully researching the influence of the broadcasting frequency changes to the cache strategies, a method to determine whether the data should be replicated or not was proposed. This method is based on the average respond time of the Mobile Client （MC） spending in reading data from the broadcast. This new cache strategy can make MC avoid waiting for a long time while accessing some data, and cut down the cost of cache management. Therefore, the MC＇s performance will be advanced obviously.

关 键 词：数据缓存 广播 移动数据库 

分 类 号：TP311.13[自动化与计算机技术—计算机软件与理论]