Strategies for Caching Information on Distributed Systems

由于经济实惠的高速互联网络技术、高性能计算机和外围设备以及万维网的显著进步，数字信息已经成为我们日常生活中不可分割的一部分。Web的爆炸性增长给网络资源和Web服务器带来了巨大的需求，导致请求远程Web服务时出现长时间的延迟。该项目将开发一个集成的研究和教育计划，研究在分布式系统（如Web缓存）上缓存信息的各种有效和高效的策略，以减少服务延迟和广域网带宽消耗。研究工作将集中于(i)深入了解Web使用的重要和未开发的特征；（ii）为这些特征建立准确的性能模型，以衡量现有和新开发的缓存策略的有效性；（iii）设计新颖的负载平衡技术，最好地利用分布式系统的聚合能力，包括缓存服务器和客户端机器；（iv）开发可扩展的视频缓存技术。这些技术的性能将通过模拟和实验来衡量。这些研究成果将对网络的发展产生重大影响。该计划的教育部分以各种策略为中心，以激励和留住潜在的研究生课程，强调质量研究。通过研究和教育工作的健康协同作用，PI将通过教学和学生辅导影响学生，为研究界做出贡献，并影响公众。

Digital information has become an inseparable part of our daily life due to significant advances in affordable high-speed internetworking technologies, high performance computer and peripherals, and the World-Wide Web. The explosive growth of the Web has imposed a heavy demand on networking resources and Web servers, resulting in long delays when requesting remote Web services.This project will develop an integrated research and education program that investigates various effective and efficient strategies for caching information on distributed system such as Web caching to reduce service delays and wide-area-network bandwidth consumption. The research work will focus on (i) gaining a deep understanding of important and unexplored characteristics of Web usage; (ii) developing accurate performance models of these characteristics to measure the effectiveness of existing and newly developed caching strategies; (iii) designing novel load-balancing techniques that best utilize the aggregated capabilities of distributed systems including cache servers and client machines; and (iv) developing scalable technologies for video caching. Performance of these techniques will be measured via simulation and experimentation. The research efforts will have a significant impact on the evolution of the Web.The education part of the program is centered around various strategies to motivate and retain potential students for the graduate program that emphasizes quality research. Through a healthy synergy of both research and education efforts, the PI will influence students through teaching and student mentoring, contribute to the research community, and impact the general public.