| 一个真实VoD/P2P系统Novasky的设计与实现 |
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| 引用本文： | 沈时军,李三立.一个真实VoD/P2P系统Novasky的设计与实现[J].小型微型计算机系统,2011,32(6). |
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| 作者姓名： | 沈时军 李三立 |
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| 作者单位： | 清华大学计算机科学与技术系,北京,100084 |
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| 摘 要： | 近年来,基于对等网络的视频点播系统(VoD/P2P)备受人们关注.这类系统的实现还面临诸多挑战,如存储策略、用户激励、媒体版权等.本文提出一种高效率、低成本、易扩展的VoD/P2P系统设计方案Novasky.与已有系统相比,Novasky的最大不同是引入了编码存储策略与虚拟货币机制.经过三年多的开发与完善,Novasky已发展成为一个跨平台的分布式系统.它是少数几个使用人数较多的研究性VoD/P2P系统之一.自2009年9月在清华大学开放使用以来,已接受1100多用户对346个视频的6288次点播,累计点播数据量2.1TB.
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| 关 键 词： | 对等网络 视频点播 真实系统 |
Novasky:Design and Implementation of a Real World VoD/P2P System |
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| SHEN Shi-jun,LI San-li.Novasky:Design and Implementation of a Real World VoD/P2P System[J].Mini-micro Systems,2011,32(6). |
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| Authors: | SHEN Shi-jun LI San-li |
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| Affiliation: | SHEN Shi-jun,LI San-li(Department of Computer Science and Technology,Tsinghua University,Beijing 100084,China) |
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| Abstract: | Peer-to-Peer based Video-on-Demand systems(VoD/P2P) have received a lot of research attention in recent years.Due to the difficulties in storage design,user incentives and media copyright,it is challenging to implement such a system.This paper proposes Novasky,an efficient,scalable and low-cost system for VoD/P2P.Compared to existing systems,Novasky introduces two novel mechanisms,i.e.erasure coding storage and virtual currency policy.After three years of development and improvement,Novasky has evolved into... |
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| Keywords: | peer-to-peer video-on-demand real world system |
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