Cache performance optimization method, system and data writing method

Abstract

The invention belongs to the technical field of computer storage systems, and particularly relates to a cache performance optimization method and system. The cache performance optimization method comprises the steps that each one-layer cache is divided into two layers of cache bodies including the superior cache bodies and the subordinate cache bodies, wherein the superior cache body is responsible for read-write of cache data, and the subordinate cache body is used for enabling data between two nodes to keep synchronous; a rapid backup layer and a mirror image layer are added between each superior cache body and the corresponding subordinate cache body, wherein the rapid backup layers are responsible for data copying between virtual disks, and the mirror image layers are responsible for data backup in the virtual disks and correspond to physical disks; the data write-in process is protected through an atom protection mechanism. According to the method, data hierarchical synchronization is adopted, copying is conducted multiple times, the data security operations are increased, and the condition that the data is damaged or lost is prevented. When the data is written, the write operation performance is improved due to the fact that the data is written into the subordinate cache bodies and returned. The atom protection mechanism is adopted in data write-in, and the condition that asynchronous data writing misoperation is caused by cache layering is avoided.

Description

technical field [0001] The invention belongs to the technical field of computer storage system cache, and in particular relates to a cache performance optimization method, system and data writing method. Background technique [0002] Cache is the buffer for data exchange (called Cache). When a piece of hardware or a certain client wants to read data, the system will first search for the required data from the cache. If it finds it, it will execute it directly. If it cannot find it Then search from memory or hard disk. Since the cache runs much faster than the memory, the role of the cache is to improve the running performance. [0003] In modern computer storage systems, there is an increasing performance gap between the processor and the underlying storage system. Therefore, it becomes increasingly important to improve the performance of the cache system, especially to improve the performance of the multi-level cache system. In the face of large-scale data applications, ...

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Problems solved by technology

[0004] The present invention aims at the problems in the prior art that the amount of current data increases, the amount of cached data increases, which affects the performance of storage, the speed of data storage becomes slower and slower, and cannot well meet the needs of customers, etc., and proposes a cache Methods of performance optimization

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