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.
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 a cross-platform distributed system.It is one of the few research-oriented VoD/P2P systems with many users.Since the first deployment in Tsinghua University in September 2009,Novasky has received 6288 play requests on 346 videos from 1100 users,with total video traffic 2.1 TB.
出处
《小型微型计算机系统》
CSCD
北大核心
2011年第6期1041-1048,共8页
Journal of Chinese Computer Systems
关键词
对等网络
视频点播
真实系统
peer-to-peer
video-on-demand
real world system
