A Dynamic flashing Based Load Balancing for a Scalable Wireless Internet Proxy Server Cluster


KIPS Transactions on Computer and Communication Systems, Vol. 14, No. 7, pp. 443-450, Dec. 2007
10.3745/KIPSTA.2007.14.7.443,   PDF Download:

Abstract

Performance scalability and storage scalability become important in a large scale cluster of wireless internet proxy cache servers. Performance scalability means that the whole performance of the cluster increases linearly according as servers are added. Storage scalability means that the total size of cache storage in the cluster is constant, regardless of the number of cache servers used, if the whole cache data are partitioned and each partition is stored in each server, respectively. The Round-Robin based load balancing method generally used in a large scale server cluster shows the performance scalability but no storage calability because all the requested URL data need to be stored in each server. The hashing based load balancing method shows storage scalability because all the requested URL data are partitioned and each partition is stored in each server, respectively. but, it shows no performance scalability in case of uneven pattern of client requests or Hot-Spot. In this paper, we propose a novel dynamic hashing method with erformance and storage scalability. In a time interval, the proposed scheme keeps to find some of requested URLs allocated to overloaded servers and dynamically reallocate them to other less-loaded servers. We performed experiments using 16 PCs and experimental results show that the proposed method has the performance and storage scalability as different from the existing hashing method.


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Cite this article
[IEEE Style]
H. K. Kwak, D. S. Kim and K. S. Chung, "A Dynamic flashing Based Load Balancing for a Scalable Wireless Internet Proxy Server Cluster," KIPS Journal A (2001 ~ 2012) , vol. 14, no. 7, pp. 443-450, 2007. DOI: 10.3745/KIPSTA.2007.14.7.443.

[ACM Style]
Hu Keun Kwak, Dong Seung Kim, and Kyu Sik Chung. 2007. A Dynamic flashing Based Load Balancing for a Scalable Wireless Internet Proxy Server Cluster. KIPS Journal A (2001 ~ 2012) , 14, 7, (2007), 443-450. DOI: 10.3745/KIPSTA.2007.14.7.443.