广域虚拟数据空间中边缘缓存系统的研究与实现  

Research and implementation of edge cache system in global virtual data space across WAN

作　　者：霍建同 肖利民[1,2] 霍志胜 徐耀文 HUO Jiantong;XIAO Limin;HUO Zhisheng;XU Yaowen(State Key Laboratory of Software Development Environment,Beijing 100191,China;School of Computer Science and Engineering,Beihang University,Beijing 100191,China)

机构地区：[1]软件开发环境国家重点实验室,北京100191 [2]北京航空航天大学计算机学院,北京100191

出　　处：《大数据》2021年第5期57-81,共25页Big Data Research

基　　金：国家重点研发计划资助项目(No.2018YFB0203901)。

摘　　要：针对广域虚拟数据空间系统中边缘客户端访问和共享远程数据时,数据冗余传输造成大量网络带宽浪费的问题,通过研究广域虚拟数据空间系统中的缓存技术,提出边缘缓存机制优化数据访问通路,将数据以文件粒度缓存在靠近边缘客户端的位置,从而提升上层应用访问和共享数据的性能。测试结果表明,作为虚拟数据空间系统的补充,提出的边缘缓存系统可提升广域数据共享的性能。Aiming at the problem of a large amount of network bandwidth wasted by data redundancy transmission when the edge client accesses and shares remote data in the GVDS,the caching technology in the wide-area virtual data space system was studied and an edge caching mechanism to optimize the data access path was proposed.The data is cached at a file granularity close to the edge client,thereby improving the performance of upper-level applications to access and share data.The experimental results show that the edge cache system proposed can improve the performance of wide-area data sharing as a supplement to the GVDS.

关 键 词：广域网 边缘缓存 广域虚拟数据空间 共享数据访问性能 

分 类 号：TP319[自动化与计算机技术—计算机软件与理论]