并行缓存结构在高速海量数据记录系统中的应用

Application of Parallel Cache Structure in High-speed Mass Data Recording System

在光纤2.5Gbps SDH干线网上,常常需要将某些重要的高速数据及时记录下来,以便为后续的分析处理作准备;以硬盘作为存储介质的高速海量数据记录系统有着广泛的应用前景;但是受其机械结构的限制,硬盘的内部数据传输速率远低于高速数据的传输速度;在分析了乒乓缓存结构的原理及特点的基础之上,提出了一种由乒乓结构演变而来的并行缓存结构;该结构可以降低数据流的传输速率,使之与硬盘内部数据传输率相匹配,进而实现了以硬盘为存储介质的高速海量数据记录系统。

On the 2.5Gbps SDH trunk line network, It＇ s usually needed to immediately take a record of some important high-speed data to make preparations for the latter works. The high-speed mass data recording system using hard disk as the memory medium will be used broadly in the future. But the internal data transfer rate of the hard disk is far below the speed of the data stream to be recorded. Based on the study of the ping-pang cache structure, a parallel cache structure has been proposed. And the parallel cache structure can slow down the speed of the data stream, matching it with the internal data transfer rate of the hard disk, then realizing the recording system that the hard disk memorizes the high-speed mass data as memory medium.