封闭式P2P网络中的离线数据存储

摘要

随着计算机与网络技术的快速发展,网络分布式存储逐渐成为存储技术研究的重点,但对离线数据存储的研究仍是个空缺.提出一种基于封闭式P2P网络的离线数据存储系统.客户端将离线数据发送至P2P网络,网络中节点利用chord路由算法存储数据;目标用户上线后,提出查询下载请求,从系统中获取与自身相关的离线数据.为了提高离线数据存取效率,每个节点保存一张包含网络中所有节点信息的路由表,离线数据的定位通过本地查找实现;另外,对传统Chord路由算法进行改进,使其更好地适应封闭式P2P网络的离线数据存储.实验表明,在封闭式网络中进行离线数据存取可以获得高的效率.%With the rapid development of computer and network technology, the research of P2P storage system is one of the hottest issues, and P2P storage system is regarded as one of the most promising P2P applications. This paper designs a distributed offline data storage system based on the closed P2P system. Client delivers offline data to P2P networks, and node stores data according to Chord protocol. When the user links to the networks, it will give query request and get the correlative data from the system. To improve the storage efficiency, each node in the system stores a table with all nodes'information and it can conduct local look-up. In addition, this paper improves the traditional Chord algorithm to make it applicable to the offline data storage in closed P2P system. The experiment shows that this system owns high storage efficiency.