Network coordinates-based request routing approach to improve multimedia content delivery

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. © (2012) Trans Tech Publications Switzerland.