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Efficient Content Placement on Multimedia CDN Using Fuzzy Decision Algorithm |
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PP: 471S-477S |
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Author(s) |
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Jian-Bo Chen,
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Abstract |
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| Multimedia Content Delivery Networks (CDN) have been employed on the Internet as a way to improve performance and reliability. In CDN architecture, the content is duplicated from the origin server to replica servers at the edge of the Internet to improve the performance and minimize the use of network bandwidth. Efficiently placing the multimedia contents in CDN is a challenging problem. The bandwidth availability, content hit rate, and storage availability are three factors that can be used to determine the placement of multimedia contents. In this paper, a fuzzy decision algorithm is adopted to solve this issue. With the proposed fuzzy decision algorithm, three input parameters are used. The fuzzy decision algorithm consists of three steps. The fuzzification step obtains the membership function values from the three input parameters. The rule evaluation step uses these membership function values to obtain the fuzzy decision values. And the defuzzification step obtains the final crisp value based on the fuzzy decision values. This crisp value is used to determine the placement of multimedia contents. The simulation results show that the fuzzy decision algorithm can achieve a higher performance than other algorithms. |
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