Impacto do Churn em Políticas de Gerenciamento de Objetos em Sistemas CDN-P2P (Impact of Churn on Object Management Policies Deployed in CDN-P2P Systems)

César Augusto Viana Melo (cavmelo@icomp.ufam.edu.br)1, Dario Vieira (dario.vieira@efrei.fr)2, Joăo da Mata Libório (liborio_filho@hotmail.com)1


1Universidade Federal do Amazonas
2École d'Ingénieur des Technologies de l'Information et de la Communication

This paper appears in: Revista IEEE América Latina

Publication Date: April 2012
Volume: 10,   Issue: 3 
ISSN: 1548-0992


Abstract:
In this paper, we study the impact of churn on object management policies deployed in a CDN-P2P system. The effectiveness of buffer enlargement and replicating control, in reducing the effects of churn on these policies, is analyzed. We have found that neither the simply enlargement of peers' storage capacity nor a zero replicating strategy are effective actions to improve performance of an object management policy. Policies that implements different caching strategies are evaluated, and a YouTube video collection, which records over 1.6 million video's log, is used in our experimental studies

Index Terms:
Multimedia Information Systems, Content Distribution System, Peer-to-peer, Churn, Caching   


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