understanding Cache Policy to Evaluate Write Performance with Hierarchical Hardware

First, it briefly introduces the status of write-optimized distributed file system, focuses on the issues related to write optimization, and then introduces write-optimized full-stack cache acceleration and related technology of storage tiering, followed by full-stack cache acceleration in SSD Cache. Accelerated technology was introduced in detail, and the performance advantages were further demonstrated through comparative testing, from the above data, we can clearly see that using the Flash cache, the flash cache of the four nodes is 64% lower than the SATA hard disk processing time. Finally, the challenges that may be faced in the future research work were prospected.