Peer-to-peer cooperative caching in mobile environments

Chi Yin Chow, Hong Va Leong, Alvin Chan

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

57 Citations (Scopus)

Abstract

Caching is a key technique for improving the data retrieval performance of mobile clients in mobile environments. The emergence of robust and reliable peer-to-peer (P2P) technologies now brings to reality what we call "cooperative caching" in which mobile clients can access data items from the cache in their neighboring peers. This paper discusses cooperative caching in mobile environments and proposes a Cooperative CAching scheme for mobile systems, called COCA. In COCA, we identify two types of mobile clients: low activity and high activity. They are referred to as Low Activity Mobile client/host (LAM) and High Activity Mobile client/host (HAM) respectively. Both LAM and HAM can share their cache. The server replicates appropriate data items to LAMs so that HAMs can take advantages of the LAM replicas. The performance of pure COCA and COCA with the data replication scheme is evaluated through a number of simulated experiments which show that COCA significantly reduces both the server workload in terms of number of requests and the access miss ratio when the MHs reside outside of the service area. The COCA with the data replication scheme can improve the overall system performance in other aspects as well.
Original languageEnglish
Title of host publicationProceedings - International Conference on Distributed Computing Systems
Pages528-533
Number of pages6
Publication statusPublished - 12 Jul 2004
EventProceedings - 24th International Conference on Distributed Computing Systems Workshops - Hachioji, Japan
Duration: 23 Mar 200424 Mar 2004

Conference

ConferenceProceedings - 24th International Conference on Distributed Computing Systems Workshops
Country/TerritoryJapan
CityHachioji
Period23/03/0424/03/04

ASJC Scopus subject areas

  • Software
  • Hardware and Architecture
  • Computer Networks and Communications

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