Publication Type
Journal Article
Version
publishedVersion
Publication Date
10-2002
Abstract
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.
Keywords
Mobile computing, location-dependent information, cache replacement, cache invalidation, semantic caching, performance evaluation
Discipline
Databases and Information Systems | Numerical Analysis and Scientific Computing
Publication
IEEE Transactions on Computers
Volume
51
Issue
10
First Page
1141
Last Page
1153
ISSN
0018-9340
Identifier
10.1109/tc.2002.1039841
Publisher
IEEE
Citation
ZHENG, Baihua; XU, Jianliang; and LEE, Dik Lun.
Cache Invalidation and Replacement Strategies for Location-Dependent Data in Mobile Environments. (2002). IEEE Transactions on Computers. 51, (10), 1141-1153.
Available at: https://ink.library.smu.edu.sg/sis_research/121
Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-No Derivative Works 4.0 International License.
Additional URL
http://dx.doi.org/10.1109/tc.2002.1039841
Included in
Databases and Information Systems Commons, Numerical Analysis and Scientific Computing Commons