Affiliation:
1. University of Science and Technology Beijing
2. Tsinghua University
Abstract
In order to solve the problem of large-scale multimedia content delivery, we present Multimedia Content Delivery Network (MM-CDN). For providing multimedia services with high quality in MM-CDN, the traditional request routing approaches in CDN face two key challenges, namely performance and cost. To balance the tradeoff between performance and cost in MM-CDN, we propose an improved request routing approach. First, based on the idea of network coordinates, the computation and transfer costs of different server clusters are computed depending on the network and server status change. Then, all the server clusters are reorganized in the coordinate space. Finally, user requests can be adaptively redirected to the server clusters with minimum cost without sacrificing performance. Computational results show that the effectiveness of our approach with acceptable time performance.
Publisher
Trans Tech Publications, Ltd.
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