Data writing cache control method and device, electronic equipment and storage medium

Abstract

The invention provides a data writing cache control method. The method comprises the following steps: receiving a writing request instruction; Determining a writing type of the writing request instruction; Wherein the writing type is random writing or sequential writing; And writing the write data corresponding to the write request instruction into a cache storage module according to the write type. Visibly, random writing and sequential writing are distinguished by determining the writing type of the writing request instruction; Therefore, the control of the data write cache is realized, theproblem of emptying efficiency when the cache needs to be emptied due to the fact that the data write cache is flashed according to the logic address sequence of the logic unit in the prior art is avoided, the overall performance fluctuation can be reduced, and the emptying write cache efficiency is improved. The invention further provides a data writing cache control device, electronic equipmentand a computer readable storage medium which all have the above beneficial effects.

Description

Technical field [0001] This application relates to the field of cache technology, and in particular to a data write cache control method, a data write cache control device, electronic equipment, and computer-readable storage media. Background technique [0002] In a computer storage area network (SAN, Storage Area Network) type of storage system, in order to improve the performance of data read and write, data caching is often provided, that is, the host's write request data is stored in the cache of the DRAM medium and the host is responded to to complete the write When processing a read request, if the requested data is not in the cache, it is read from the back-end media and stored in the cache and responded to the host. If the requested data is in the cache, the response is obtained from the cache to the host. [0003] The written data stored in the cache is called the write cache, and the write cache is asynchronously flushed to the back-end disk media, so that sequential writ...

AI Technical Summary

Problems solved by technology

[0004] A general SAN storage system performs cache management based on logical units (LU, Logical Unit). The traditional cache management method is to fix the overall write cache ratio or quantity. The performance fluctuation is uncontrollable, and the clearing efficiency is low when the write cache needs to be flushed and cleared as soon as possible

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