Title :
Performance Analysis of Caching Strategies for Proxy-Assisted VOD Services
Author :
Chan, Chen-Lung ; Huang, Shih-Yu ; Lin, Nien-Chen ; Wang, Jia-Shung
Author_Institution :
Dept. of Comput. Sci., Nat. Tsing Hua Univ., Hsinchu
Abstract :
Proxy caching strategies, especially prefix caching and interval caching, are commonly used in video-on-demand (VOD) systems to improve both system performance and the playback experience of users. However, because these caching strategies are designed for homogeneous clients, they do not perform well in the real world where clients are heterogeneous (i.e., different sizes of client-side buffers). In this paper, we investigate the problems caused by heterogeneous clients, and then analyze the theoretical performance of these caching strategies. Based on these analytical results, we derive some rules for a proxy to determine which caching strategy should be applied so that it can maximize system performance
Keywords :
cache storage; client-server systems; multimedia communication; video on demand; interval caching; multimedia communication; prefix caching; proxy caching strategy; video-on-demand system; Bandwidth; Buffer storage; Computer science; Microcomputers; Network servers; Performance analysis; Streaming media; System performance; Telephone sets; Web server;
Conference_Titel :
Information Technology and Applications, 2005. ICITA 2005. Third International Conference on
Conference_Location :
Sydney, NSW
Print_ISBN :
0-7695-2316-1
DOI :
10.1109/ICITA.2005.211
