Method, system and equipment for caching files through external storage

Abstract

The invention discloses a method, a system and equipment for caching files through an external storage. The method includes that data needed to be cached are stored in the external storage, and capacity of cached data is greatly increased; at the same time, a caching index is added to the cached data, so that during retrieving, the cached data can be quickly retrieved, and retrieving speed is quickened; during changing or first-time reading of files, for the files needed to be written in the cached data, reading is performed according to a conventional process; during reading, the files are stored in a caching sequence and written into the cached data through the caching sequence, conventional reading and caching writing-in are enabled to performed simultaneously; reading from the cached dat can be performed quickly during next-time reading, so that writing-reading speed is increased.

Description

technical field [0001] The invention relates to file caching, in particular to a method, system and device for caching files through external storage. Background technique [0002] Cache is a temporary file exchange area. The existing technical method is to temporarily store recently accessed information through cache memory (RAM) or cache (cache), and read from it when access is required, so as to achieve fast access and save time. However, the common problem with RAM and high-speed cache is that once the power is turned off, the cached data will disappear and need to be stored again; at the same time, compared with external storage devices such as hard disks, RAM and high-speed cache are more expensive and limited to RAM and high-speed cache space The size of the cache data is also limited. With the development of technology and the improvement of the computing performance of computing devices, the running software programs are getting larger and larger, and the cache spa...

AI Technical Summary

Problems solved by technology

However, the common problem with RAM and high-speed cache is that once the power is turned off, the cached data will disappear and need to be stored again; at the same time, compared with external storage devices such as hard disks, RAM and high-speed cache are more expensive and limited to RAM and high-speed cache space The size of the cache data is also limited. With the development of technology and the improvement of the computing performance of computing devices, the running software programs are getting larger and larger, and the cache space required for running is also increasing. Therefore, it is necessary to break through the existing Small limitations on RAM and cache space

[0003] In addition, when RAM and cache cache data, they do not consider the location information of the cached data storage. Therefore, when reading the required cached data, they need to be searched and read one by one, which affects the reading efficiency.

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