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Computer Science Department Seminars
Design and Implementation
of Hyper-Proxy System for High QualityStreaming Media Delivery Over Internet Friday, April 16, 2004 at 10:30 ST II room 320 Songqing Chen Department of Computer Science College of William and Mary Abstract The proliferation of streaming media contents and its high demand from end users challenge the existing client-proxy-server Internet systems in two ways. First, media objects are generally very large. To fully cache several media objects can easily exhaust the proxy cache space. Second, the media delivery has rigorous real-time constraints. Clients who request the streaming media objects always demand a small startup delay and jitter-free playback. Thus, the conventional proxy caching system does not work for streaming media delivery. Studying existing proxy-based streaming media delivery strategies, we have identified several major limitations. In this talk, I will present (1) an effective design model for streaming media delivery systems by analyzing two pairs of conflicting performance objectives, which have not been addressed by any existing systems, (2) the design of a streaming delivery system, Hyper-Proxy, which is guided by our design model, and (3) the implementation of the Hyper-Proxy system. Hyper-Proxy is currently being deployed at many sites of the HP Company. About the Speaker: Songqing Chen is a Ph.D. candidate of Department of Computer Science at the College of William and Mary. He received his B.S. and M.S. from Huazhong University of Science and Technology, China in 1997 and 1999, respectively. Since 2002 summer, he has been working on Hyper-Proxy, which is a collaboration research project between the College of William and Mary and the HP Labs. His research interests include distributed systems (Internet content delivery systems and high performance computing systems) and operating systems (memory systems and file systems). |