ITR/SI: Adaptive Wide-Area Information Delivery

ITR/SI：自适应广域信息交付

• 批准号: 0121341
• 负责人: Henry Levy
• 金额: $ 78万
• 依托单位: University of Washington
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-10-01 至 2005-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0121341&HistoricalAwards=false
• 关键词: ITR; SI; Adaptive; Wide; Area

The explosive popularity and exponentially increasing scale of the World Wide Web has severely stressed the Internet's content-delivery infrastructure. This stress has begun to expose the inefficiencies and limitations of the Web's traditional client-server architecture. A progression of new mechanisms and alternative architectures have recently appeared, including content delivery networks (CDNs), such as Akamai, and peer-to-peer overlay networks, such as Napster. Despite the rapid deployment and global use of these architectures, however, little is understood about their behavior in many cases. The goals of this research project are threefold. First, the effectiveness of existing Internet content-delivery architectures will be quantitatively analyzed, specifically focusing on (1) cache infrastructure, (2) content-delivery networks, and (3) peer-to-peer networks. Second, based upon these measurements, the design of new or enhanced architectures for Web content delivery will be explored. Third, new designs will be implemented, deployed, and measured. One particular focus will be the design and implementation of adaptive systems that make heavy use of self-measurement and on-line algorithms, e.g., to dynamically optimize request routing, content placement, or the topology of the peer-to-peer overlay network. Overall, the hope is to increase the understanding of content-delivery architectures and to develop new content-delivery mechanisms that greatly improve the behavior of the Internet.

万维网的爆炸式普及和指数级增长的规模已经严重强调了互联网的内容交付基础设施。 这种压力已经开始暴露Web传统客户机-服务器体系结构的低效和局限性。 最近出现了一系列新机制和替代架构，包括Akamai等内容交付网络（CDN）和Napster等对等覆盖网络。尽管这些体系结构部署迅速，并在全球范围内使用，但是，在许多情况下，人们对它们的行为知之甚少。这个研究项目的目标有三个方面。 首先，将定量分析现有互联网内容交付架构的有效性，特别关注（1）缓存基础设施，（2）内容交付网络和（3）对等网络。 第二，基于这些测量，将探讨Web内容交付的新的或增强的体系结构的设计。 第三，新的设计将被实施、部署和衡量。 一个特别的重点将是自适应系统的设计和实施，使大量使用自我测量和在线算法，例如，以动态地优化请求路由、内容放置或对等覆盖网络的拓扑。 总的来说，希望能增加对内容交付体系结构的理解，并开发新的内容交付机制，大大改善互联网的行为。