Cache Management for Concurrent Transaction Execution in Mobile Wireless Environment | Science Publications

Journal of Computer Science

J. C.M.J. Pamila¹  K. Thanushkodi¹ 

关键词: Cache invalidation;    cache replacement;    concurrent transaction execution;    mobile transactions;    Global System for Mobile Communication (GSM);    Universal Mobile Telecommunications System (UMTS);    Base Station (BS);   

DOI  :  10.3844/jcssp.2011.374.378

学科分类：计算机科学（综合）

来源: Science Publications

【 摘 要 】

Problem statement: Improvement in mobile communication technology and increasedcapability of mobile devices has made transaction processing possible with mobile devices.Transactions access services provided by the data server connected to the packet data network. Directdata access may overload the network and server. Data items are cached to improve data availability.The cache should be managed and maintained effectively to support concurrent transaction executionin mobile wireless environment. This study proposes a cache management strategy that includes cacheinvalidation and replacement. Approach: The contents of the cache are invalidated based on thepredicted life time of the data item and the cache contents are replaced based on the degree of sharing.The count of dependent transactions determines the degree of sharing of the data item. Results: Theexperimental results ensure reduced stale hit probability and restart probability of the proposed PLPbased cache invalidation technique. The proposed cache replacement policy improves the cache hitratio at least by 20% when compared to the existing replacement policies. Conclusion: The proposedcache invalidation strategy and replacement policy suit well for concurrent transaction executionenvironment where the degree of data sharing and the dynamism in data update need to be considered.

【 授权许可】

Unknown