Cache Invalidation and Replacement Strategies for Location-Dependent Data in Mobile Environments
Mobile location-dependent information services (LDISs) have become increasingly popular in recent years. However, data caching strategies for LDISs have thus far received little attention. In this paper, we study the issues of cache invalidation and cache replacement for location-dependent data unde...
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sg-smu-ink.sis_research-11202015-12-26T00:39:34Z Cache Invalidation and Replacement Strategies for Location-Dependent Data in Mobile Environments ZHENG, Baihua XU, Jianliang LEE, Dik Lun Mobile location-dependent information services (LDISs) have become increasingly popular in recent years. However, data caching strategies for LDISs have thus far received little attention. In this paper, we study the issues of cache invalidation and cache replacement for location-dependent data under a geometric location model. We introduce a new performance criterion, called caching efficiency, and propose a generic method for location-dependent cache invalidation strategies. In addition, two cache replacement policies, PA and PAID, are proposed. Unlike the conventional replacement policies, PA and PAID take into consideration the valid scope area of a data value. We conduct a series of simulation experiments to study the performance of the proposed caching schemes. The experimental results show that the proposed location-dependent invalidation scheme is very effective and the PA and PAID policies significantly outperform the conventional replacement policies. 2002-10-01T07:00:00Z text application/pdf https://ink.library.smu.edu.sg/sis_research/121 info:doi/10.1109/tc.2002.1039841 https://ink.library.smu.edu.sg/context/sis_research/article/1120/viewcontent/TC02_cache.pdf http://creativecommons.org/licenses/by-nc-nd/4.0/ Research Collection School Of Computing and Information Systems eng Institutional Knowledge at Singapore Management University Mobile computing location-dependent information cache replacement cache invalidation semantic caching performance evaluation Databases and Information Systems Numerical Analysis and Scientific Computing |
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Mobile computing location-dependent information cache replacement cache invalidation semantic caching performance evaluation Databases and Information Systems Numerical Analysis and Scientific Computing ZHENG, Baihua XU, Jianliang LEE, Dik Lun Cache Invalidation and Replacement Strategies for Location-Dependent Data in Mobile Environments |
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Mobile location-dependent information services (LDISs) have become increasingly popular in recent years. However, data caching strategies for LDISs have thus far received little attention. In this paper, we study the issues of cache invalidation and cache replacement for location-dependent data under a geometric location model. We introduce a new performance criterion, called caching efficiency, and propose a generic method for location-dependent cache invalidation strategies. In addition, two cache replacement policies, PA and PAID, are proposed. Unlike the conventional replacement policies, PA and PAID take into consideration the valid scope area of a data value. We conduct a series of simulation experiments to study the performance of the proposed caching schemes. The experimental results show that the proposed location-dependent invalidation scheme is very effective and the PA and PAID policies significantly outperform the conventional replacement policies. |
format |
text |
author |
ZHENG, Baihua XU, Jianliang LEE, Dik Lun |
author_facet |
ZHENG, Baihua XU, Jianliang LEE, Dik Lun |
author_sort |
ZHENG, Baihua |
title |
Cache Invalidation and Replacement Strategies for Location-Dependent Data in Mobile Environments |
title_short |
Cache Invalidation and Replacement Strategies for Location-Dependent Data in Mobile Environments |
title_full |
Cache Invalidation and Replacement Strategies for Location-Dependent Data in Mobile Environments |
title_fullStr |
Cache Invalidation and Replacement Strategies for Location-Dependent Data in Mobile Environments |
title_full_unstemmed |
Cache Invalidation and Replacement Strategies for Location-Dependent Data in Mobile Environments |
title_sort |
cache invalidation and replacement strategies for location-dependent data in mobile environments |
publisher |
Institutional Knowledge at Singapore Management University |
publishDate |
2002 |
url |
https://ink.library.smu.edu.sg/sis_research/121 https://ink.library.smu.edu.sg/context/sis_research/article/1120/viewcontent/TC02_cache.pdf |
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