移动数据库客户端缓存一致性的分析研究

移动数据库客户端缓存一致性的分析研究

王潜平¹，杨婧²，管廷昭³

1．中国矿业大学计算机科学与技术学院，江苏徐州 221116；2. 盐城工学院优集学院，江苏盐城 224003；3. 南京信息工程学院网络信息中心，江苏南京 210044

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2006-10-24 发布日期:2006-10-24
通讯作者: 王潜平

Client caching coherency in a mobile database

WANG Qian-ping¹，YANG Jing²，GUAN Ting-zhao³

1. School of Computer Science & Technology, China University of Mining &Technology, Xuzhou 221116;2. UGS college, Yancheng Institute of Technology, Yancheng 224003;3. Network Center, Nanjing University of Information Science & Technology, Nanjing 210044

Received:1900-01-01 Revised:1900-01-01 Online:2006-10-24 Published:2006-10-24
Contact: WANG Qian-ping

摘要/Abstract

摘要： 对移动数据库环境下2种缓存一致性维护策略进行了比较，比较了单个方法的有效性，以及它们结合执行时的性能。分析表明每一种方法在一定程度上都能够提高性能，但若将其有效结合起来，则可提高缓存命中率，降低网络吞吐量，从而改善缓存一致性的性能。

关键词: 移动数据库, 缓存一致性, 对等覆盖区域 , 离散Markov模型

Abstract: Two basic schemes of cache coherency maintenance and the effectiveness of each were studied by comparison for a mobile database, and the effectiveness when they were implemented together was also analyzed. The results show that schemes can to a certain extent improve the performance. They can be combined in tailored ways, and can improve the hit and throughput to get performance improvement.

Key words: peer coverage area(PCA) , discrete markov model, caching coherency, mobile database

中图分类号:

TP319

王潜平,杨婧,管廷昭 . 移动数据库客户端缓存一致性的分析研究[J]. J4, 2007, 42(11): 53-58 .

WANG Qian-ping,YANG Jing,GUAN Ting-zhao . Client caching coherency in a mobile database[J]. J4, 2007, 42(11): 53-58 .

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