移动环境中的一种缓存失效报告策略

摘要

The flaws of traditional cache invalidation reporting strategies are with poor bandwidth efficiency and extensive electrical energy consumption.Aiming at these problems, we proposed a new broadcasting strategy which partitions the invalidation report dynamically.By considering the query ratio, refresh rate and the size of data items, this strategy tries to broadenst the updating data items through different invalidation mode.It was proved that the new strategy is superior to the traditional cache invalidation report strategy in terms of bandwidth efficiency, electrical energy consumption, and the query delay.%针对传统的缓存失效报告策略对带宽利用率低、客户端电能消耗大的缺陷,提出了动态划分失效报告的广播策略.通过考虑数据项的查询率、更新率及数据大小,对更新数据项采用不同的失效方式进行广播,分析证明此策略的带宽利用率、电能消耗、查询延迟优于传统的失效报告策略.