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Modelling rate-based dynamic cache sharing for distributed VOD systems

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2 Author(s)
B. Sonah ; Dept. of Comput. Sci. & Eng., Mauritius Univ., Reduit, Mauritius ; M. R. Ito

A distributed VOD system includes several VOD sub-systems, each VOD sub-system consisting of an archive server (AS), a continuous media server (CMS) and a medata DB. A VOD sub-system employs an object replacement algorithm by which a video is selected to be replaced by a new video. Upon a miss, the VOD system must decide onto which CMS to load the new video. We address this issue by modelling a dynamic approach of logically sharing the overall CMS cache space among the CMSs based on the current average arrival rate of requests at each VOD sub-system to achieve superior cache performance. Our simulation results show that dynamic cache sharing is a means by which the hit performance at the CMSs can be improved

Published in:

Information Technology: Coding and Computing, 2000. Proceedings. International Conference on

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