Support Strong Consistency for Mobile Dynamic Contents Delivery Network

With the development whereby mobile content distribution systems can manage dynamically changing files, an important issue to be resolved is consistency management, which means the cached replicas on different mobile sites must be updated if the originals change. This paper is to design an integrated consistency-control algorithm for mobile contents delivery network (M-CDN) to enhance the efficient utilization of network resource and support the client mobility. Firstly, by carrying out an analysis of mobile surrogates' characteristics, for a given content which has been changed on its original node, only a limited number of its replicas instead of all replicas are updated. Secondly, if a replica has been selected for update, the latest version will be sent from an algorithm-decided site instead of from its original server. Simulation results show that the proposal outperforms other conventional methods.

[1]  Li Fan,et al.  Web caching and Zipf-like distributions: evidence and implications , 1999, IEEE INFOCOM '99. Conference on Computer Communications. Proceedings. Eighteenth Annual Joint Conference of the IEEE Computer and Communications Societies. The Future is Now (Cat. No.99CH36320).

[2]  Chengjie Liu,et al.  Maintaining Strong Cache Consistency in the World Wide Web , 1998, IEEE Trans. Computers.

[3]  Zhou Su,et al.  An integrated Retrieval and Pre-fetching algorithms for Segmented Streaming in Mobile Peer-to-Peer Networks , 2005, 2005 IEEE International Conference on Cluster Computing.

[4]  Ravi Jain,et al.  Mobility Aware Server Selection for Mobile Streaming Multimedia Content Distribution Networks , 2003, WCW.

[5]  Zhou Su,et al.  Scalable Maintenance for Strong Web Consistency in Dynamic Content Delivery Overlays , 2007, 2007 IEEE International Conference on Communications.

[6]  Giuliano Antoniol,et al.  Predicting Web site access: an application of time series , 2001, Proceedings 3rd International Workshop on Web Site Evolution. WSE 2001.

[7]  Takumi Miyoshi,et al.  Waiting Time versus Utility to Download Images , 2001 .