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近年来,基于对等网络的视频点播系统(VoD/P2P)备受人们关注.在这类系统中,存储的难点主要表现为VoD应用中庞大的视频数与P2P网络中有限的存储资源之间的矛盾.提出对等数据随机访问的存储策略(Equivalent Data Random Access,EDRA),并重点研究了如何采用EDRA对VoD/P2P系统的存储进行优化调度,以最小化系统的资源占用或最大化系统的容量.实验表明,EDRA可以达到很高的节点带宽利用率,在相同条件下支持的最大点播数可能比传统方案高出58-73%.
In recent years, VoD / P2P based peer-to-peer (P2P) systems have attracted much attention, and the storage difficulties in such systems are mainly manifested by the large number of VoD applications and the limited storage resources in P2P networks (EDRA), and puts emphasis on how to use EDRA to optimize the storage of VoD / P2P systems to minimize the system’s resource consumption or maximize the system The experiments show that EDRA can achieve high node bandwidth utilization, and the maximum number of supported on-demand scenarios under the same conditions may be 58-73% higher than the traditional solution.