Publication IEICE TRANSACTIONS on Information and SystemsVol.E92-DNo.10pp.2073-2081 Publication Date: 2009/10/01 Online ISSN: 1745-1361 DOI: 10.1587/transinf.E92.D.2073 Print ISSN: 0916-8532 Type of Manuscript: PAPER Category: Networks Keyword: VoD, UGC, peer-to-peer, collaborative caching,
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Summary: User Generated Content (UGC) VoD services such as YouTube are becoming more and more popular, and their maintenance costs are growing as well. Many P2P solutions have been proposed to reduce server load in such systems, but almost all of them focus on the single-video approach, which only has limited effect on the systems serving short videos such as UGC. The purpose of this paper is to investigate the potential of an alternative approach, the multi-video approach, and we use a very simple method called collaborative caching to show that methods using the multi-video approach are generally more suitable for current UGC VoD systems. We also study the influence of the major design factors through simulations and provide guidelines for efficiently building systems with this method.