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CSR: Medium: Collaborative Research: Foundations of Cache Network Operations for Content Delivery

CSR：媒介：协作研究：内容交付缓存网络操作的基础

基本信息

批准号：
1763701
负责人：
Mor Harchol-Balter
金额：
$ 59.8万
依托单位：
Carnegie-Mellon University
依托单位国家：
美国
项目类别：
Continuing Grant
财政年份：
2018
资助国家：
美国
起止时间：
2018-09-01 至 2023-02-28
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1763701&HistoricalAwards=false
关键词：
CSR Medium Collaborative Research Foundations

项目摘要

When a user goes online to read the news, watch videos, buy products, play games, or use a social network, the content accessed by the user is delivered to his/her device by a large Internet-scale network called a content delivery network (or, CDN for short). A CDN may consist of hundreds of thousands of servers located in thousands of data centers around the world. Operating a large CDN is challenging due to the sheer scale and diversity of the traffic and due to the vastness of their distributed server infrastructure. This research focuses on enabling highly efficient CDN operations.The key goals of this project are minimizing the operating cost and maximizing the robustness of the network. This project develops techniques for mapping different traffic classes to servers, so as to optimize resource usage, increase hit rates, and lower bandwidth costs. This project also develops adaptive and self-tuning systems that are robust to common sources of CDN variability, including object popularity/size, load, latency, and availability. Since CDNs are the key infrastructure enabling web, video, and other online applications, this project has a significant positive impact on the quality-of-experience of Internet users, while lowering the cost of Internet services.The project will broaden participation by involving undergraduates in the research. Further, the project will help attract women to STEM through outreach activities, including "Tech Nights" and "Roadshows" for Middle-School girls, and including semi-annual "Career Advice talks" to students from high school through grad school. The project will also incorporate topics in large-scale network operations in the curriculum. Finally, the project will invest significantly in outreach and tech transfer to the CDN industry by incorporating our research in production systems and enabling students to gain real-world experience in the CDN industry through internships.All products of the project, including research papers, software, and data, will be made available to the public. In particular, the software and data produced by the project will be archived for at least five years, and even longer when feasible. There will be two software and data repositories: one at UMass Amherst (https://www.cs.umass.edu/~ramesh/Site/CODE_DATA.html) and the other at CMU (http://www.cs.cmu.edu/~harchol/SoftwareDataRepository.html).This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

当用户上网阅读新闻、观看视频、购买产品、玩游戏或使用社交网络时，用户访问的内容通过称为内容交付网络（或简称CDN）的大型互联网规模网络交付到他/她的设备。CDN可能由位于全球数千个数据中心的数十万台服务器组成。由于流量的规模和多样性以及分布式服务器基础设施的庞大性，运营大型CDN具有挑战性。本研究的重点是实现高效的CDN运营。本项目的主要目标是最大限度地降低运营成本并最大限度地提高网络的鲁棒性。该项目开发了将不同流量类别映射到服务器的技术，以优化资源使用，提高命中率，降低带宽成本。该项目还开发了自适应和自调优系统，这些系统对CDN可变性的常见来源具有鲁棒性，包括对象流行度/大小，负载，延迟和可用性。由于CDN是实现Web、视频和其他在线应用的关键基础设施，因此该项目对互联网用户的体验质量产生了显著的积极影响，同时降低了互联网服务的成本。该项目将通过让本科生参与研究来扩大参与范围。此外，该项目还将通过外联活动，包括为中学女生举办的“技术之夜”和“路演”，以及为高中至格拉德生院的学生举办的半年度“职业咨询讲座”，帮助吸引妇女参加STEM。该项目还将在课程中纳入大规模网络运作的主题。最后，该项目将通过将我们的研究融入生产系统，并让学生通过实习获得CDN行业的实际经验，从而在CDN行业的推广和技术转让方面进行大量投资。该项目的所有产品，包括研究论文，软件和数据，都将向公众开放。特别是，该项目产生的软件和数据将存档至少五年，在可行的情况下甚至更长。将有两个软件和数据存储库：一个在马萨诸塞大学阿默斯特分校（https：//www.cs.umass.edu/Cumramesh/Site/CODE_DATA.html），另一个在CMU（http：//www.cs.cmu.edu/Cumharchol/SoftwareDataRepository.html）。该奖项反映了NSF的法定使命，并被认为值得通过使用基金会的智力价值和更广泛的影响审查标准进行评估来支持。