LiveSky: Enhancing CDN with P2P

  • Authors:
  • Hao Yin;Xuening Liu;Tongyu Zhan;Vyas Sekar;Feng Qiu;Chuang Lin;Hui Zhang;Bo Li

  • Affiliations:
  • Tsinghua University, Beijing, China;Tsinghua University, Beijing, China;Tsinghua University, Beijing, China;Carnegie Mellon University, Pittsburgh, PA;Beijing Blue I.T. Technologies Co., Ltd, Beijing, China;Tsinghua University, Beijing, China;Carnegie Mellon University, Pittsburgh, PA;Hong Kong University of Science and Technology, Hong Kong, China

  • Venue:
  • ACM Transactions on Multimedia Computing, Communications, and Applications (TOMCCAP)
  • Year:
  • 2010

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Abstract

We present the design and deployment experiences with LiveSky, a commercial hybrid CDN-P2P live streaming system, which inherits the best of both CDN and P2P. We address several key challenges, including: 1) ease of integration with existing CDN infrastructure, 2) dynamic resource scaling while guaranteeing quality-of-service, 3) providing good user experience, ensuring network friendliness and upload fairness. LiveSky has been used for several large-scale live streaming events in China. Our evaluation results from real-world indicate that such a hybrid CDN-P2P system provides quality and performance comparable to a CDN and effectively scales the system capacity.