Cache hit ratio analysis method and equipment

Abstract

The invention provides a cache hit ratio analysis method and equipment. Data with the low cache hit ratio is obtained according to the total number of certain data cache read failure events, the reason for the low cache hit rate can be effectively determined according to the cumulative number of the read failure events of the data with the low cache hit rate and other cache events, the quality of cache codes can be improved in the following process according to the reason, and overall system performance is improved.

Description

technical field [0001] The present application relates to the fields of communications and computers, and in particular to a method and device for analyzing a cache hit ratio. Background technique [0002] Cache (cache) is a system for temporarily storing data. The difference between cache and storage systems such as database (DB) and file system is that the capacity is limited, the price is expensive, and it will be lost when power off, but the access speed is fast and the write speed is fast. The cache is often used as the data buffer of the system, and the frequently accessed data is put into the cache to avoid multiple visits to the database or slow access to the file system. A core indicator in the cache system is the hit rate (hit rate), which is equal to the number of times the read request returns existence / the total number of reads. Wherein, a hit (hit) means that when reading a certain data, if the data exists, it is a hit; a non-hit (miss) means that when a certa...

AI Technical Summary

Problems solved by technology

As for how to improve the hit rate, there is currently no effective quantification method. The existing judgment method is basically based on the developer’s understanding of the code, familiarity with the business structure, human judgment of the reason for the low hit rate, and then experimental verification. Can only be judged by human experience, there is no reliable tool

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