Computer Engineering and Applications ›› 2008, Vol. 44 ›› Issue (32): 148-150.DOI: 10.3778/j.issn.1002-8331.2008.32.044
• 数据库、信号与信息处理 • Previous Articles Next Articles
DU Fang1,GU Feng1,SONG Li-juan1,WANG Zhao2
Received:
Revised:
Online:
Published:
Contact:
杜 方1,顾 峰1,宋丽娟1,王 钊2
通讯作者:
Abstract: Location Aware Query(LAQ) is a common kind of query in mobile system.We propose cooperative cache management in LAQ proxy(CoMA-LA),which includes three parts:(1)merge the semantic-close data items,(2)cooperative replacement policy among neighboring proxy and (3)data consistency among proxies’ cache.The simulation results show that,compared with the classic LRU algorithm and some existing algorithms,CoMA-LA can increase the utilization ratio,reduce access latency,and increase cache hit rate effectively.
Key words: cache management, Location Aware Query(LAQ), mobile system
摘要: 位置感知查询(LAQ)是移动系统中常用的一种查询方式。提出了一种位置感知查询中的协作缓存管理技术(CoMA-LA),该方法包括三方面的内容:(1)缓存中语义相近数据项的合并;(2)相邻缓存间的协作替换策略;(3)缓存间的数据一致性保证。通过仿真实验将CoMA-LA和传统的LRU算法以及一些已有的缓存替换方法进行了比较,实验结果表明采用CoMA-LA技术能够有效提高缓存利用率,从而降低平均访问时间,提高查询命中率。
关键词: 缓存管理, 位置感知查询, 移动系统
DU Fang1,GU Feng1,SONG Li-juan1,WANG Zhao2. Cooperative cache management on Location Aware Query proxy[J]. Computer Engineering and Applications, 2008, 44(32): 148-150.
杜 方1,顾 峰1,宋丽娟1,王 钊2. 位置感知查询中的协作缓存管理[J]. 计算机工程与应用, 2008, 44(32): 148-150.
0 / Recommend
Add to citation manager EndNote|Ris|BibTeX
URL: http://cea.ceaj.org/EN/10.3778/j.issn.1002-8331.2008.32.044
http://cea.ceaj.org/EN/Y2008/V44/I32/148