网络编码云存储系统差分数据更新方案

摘要

针对基于网络编码云存储系统数据更新时通信开销过大的问题,提出一种差分数据更新方案,通过对文件中更新部分进行编码和压缩传输,降低了更新过程中的通信开销.设计实现了基于网络编码的云存储原型系统,在真实网络环境中进行部署和测试,实验结果表明,与现有更新方案相比,所提方案通信开销更小,具有更好的可扩展性.%In order to solve the problem that the communication overhead of date update was too large on network-coding-based cloud storage system,a new differential data update scheme was proposed.By encoding and compressing the updated part of file,the communication overhead was reduced significantly.A network-coding-based storage prototype system was designed and implemented,and update scheme was deployed in the real network settings.Experimental results show that the proposed scheme has less communication overhead and better scalability than the existing schemes.