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NSDI
2010

Contracts: Practical Contribution Incentives for P2P Live Streaming

13 years 5 months ago
Contracts: Practical Contribution Incentives for P2P Live Streaming
PPLive is a popular P2P video system used daily by millions of people worldwide. Achieving this level of scalability depends on users making contributions to the system, but currently, these contributions are neither verified nor rewarded. In this paper, we describe the design and implementation of Contracts, a new, practical approach to providing contribution incentives in P2P live streaming systems. Using measurements of tens of thousands of PPLive users, we show that widely-used bilateral incentive strategies cannot be effectively applied to the live streaming environment. Contracts adopts a different approach: rewarding globally effective contribution with improved robustness. Using a modified PPLive client, we show that Contracts both improves performance and strengthens contribution incentives. For example, in our experiments, the fraction of PPLive clients using Contracts experiencing loss-free playback is more than 4 times that of native PPLive.
Michael Piatek, Arvind Krishnamurthy, Arun Venkata
Added 29 Oct 2010
Updated 29 Oct 2010
Type Conference
Year 2010
Where NSDI
Authors Michael Piatek, Arvind Krishnamurthy, Arun Venkataramani, Yang Richard Yang, David Zhang, Alexander Jaffe
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