Cooperative Proxy Scheme for Large-Scale VoD Systems

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ICPADS '02 Proceedings of the 9th International Conference on Parallel and Distributed Systems
Year:
2002

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A distributed VOD server based on VIA and interval cache

PCM'04 Proceedings of the 5th Pacific Rim conference on Advances in Multimedia Information Processing - Volume Part I

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Abstract

Video-on-Demand (VoD) systems are attractive multimedia services over the Internet. However, conventionalVoD systems can not serve many viewers simultaneouslybecause such large-scale services require considerableserver load and network bandwidth. This study proposes acooperative proxy scheme, consisting of a streamingcache and a query protocol revised from Internet CacheProtocol (ICP), to improve performance of large-scaleVoD systems. The streaming cache we proposed attemptsto serve the most requests with slightly computationoverhead. In addition, our query protocol further extendsservice scalability by satisfying requests "as far as possible", although Web proxies prefer "as near as possible".Simulation results demonstrate that our proxy scheme isefficient especially in large-scale VOD systems.