P2P-VOD缓存策略MVC

Data-caching Mechanism of P2P VOD MVC

本文介绍了P2P-VOD系统中的MVC缓存策略,该策略是为了改进流媒体系统视频播放的流畅程度,服务器负载压力而提出的。P2P-VOD系统视频的连续播放,服务器的被请求频率和用户的满意程度是系统重要因素,然而现在系统中的SVC缓存策略没有充分考虑到冷热门频道节点重叠存储数据的情况,由此本文提出MVC缓存策略,该策略充分考虑到点播系统中视频冷热度,流行值等会引起系统整体缓存不均衡的因素,提高冷门视频数据分块缓存量,在节点多的情况下,热门频道节点帮助冷门频道下载数据分片,在服务器通信量不足的情况下,提高视频播放的流畅程度,减轻服务器的负载压力。

this paper introduces the MVC cache strategy in P2P-VOD system,the strategy is to improve the fluency and change the pressure of the Server in streaming video system. P2P-VOD system＇s continuous playback,the request frequency on the server and user＇s satisfaction is an important factor,however,the Single video cache in today＇s P2P VOD system does not fully take into account store data between hotcold channels,this article raise the Multi video cache strategy,the strategy to take full account of video hot and cold,epidemic value which will cause imbalance on P2P VOD,it can increase video data quantity in the overlay,when there are multi-nodes in the system,hot Channel nodes can help the less popular channels to download segment,when the traffic is not good enough,it can enhance the fluency and reduce the pressure of the server.