Journal of Beijing University of Posts and Telecommunications

  • EI核心期刊

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2012, Vol. 35 ›› Issue (3): 103-107.doi: 10.13190/jbupt.201203.103.huiw

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Resource-Aware Server Selection in Content Delivery Networks

HUI Wen1,2,LIN Chuang2,YANG Yang1   

  1. 1 School of Computer and Communication Engineering, University of Science and Technology Beijing, Beijing 100083, China;
    2 Department of Computer Science and Technology, Tsinghua University, Beijing 100084, China
  • Received:2011-05-23 Revised:2011-10-24 Online:2012-06-28 Published:2012-02-29

Abstract:

In order to solve the problem of resource location in content delivery networks, a new algorithm for selecting optimal service nodes is proposed. The algorithm provides a good solution for both service performance and overhead. First, by taking advantage of the network coordinates approach, the computation and communication overhead of different service nodes are computed depending on network and server status change. Then, based on the hierarchical clustering algorithm, all the service nodes are reorganized in the coordinate space. Finally, the user requests are adaptively redirected to the service nodes with minimum overhead without sacrificing the service performance. Experiments verified that the precision of resource location is improved and the overhead is reduced with acceptable time performance by the new algorithm.

Key words: content delivery network, resource location, hierarchical clustering, network coordinate

CLC Number: