Peer-to-peer vs. client/server: reliability and efficiency of a content distribution service

Authors:
Kenji Leibnitz;Tobias Hoßfeld;Naoki Wakamiya;Masayuki Murata
Affiliations:
Graduate School of Information Science and Technology, Osaka University, Osaka, Japan;University of Würzburg, Institute of Computer Science, Würzburg, Germany;Graduate School of Information Science and Technology, Osaka University, Osaka, Japan;Graduate School of Information Science and Technology, Osaka University, Osaka, Japan
Venue:
ITC20'07 Proceedings of the 20th international teletraffic conference on Managing traffic performance in converged networks
Year:
2007

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Abstract

In this paper we evaluate the performance of a content distribution service with respect to reliability and efficiency. The considered technology for realizing such a service can either be a traditional client/server (CS) architecture or a peer-to-peer (P2P) network. In CS, the capacity of the server is the bottleneck and has to be dimensioned in such a way that all requests can be accommodated at any time, while a P2P system does not burden a single server since the content is distributed in the network among sharing peers. However, corrupted or fake files may diminish the reliability of the P2P service due to downloading of useless contents. We compare a CS system to P2P and evaluate the downloading time, success ratio, and fairness while considering flash crowd arrivals and corrupted contents.