Double-cache data storage method and device and storage medium

Abstract

The invention discloses a dual-buffer data storage method and device and a storage medium. The buffer is divided into a first-level buffer and a second-level buffer. The first level cache stores the hot data directly in memory, and the second level cache stores hot data according to different data types. When receiving a query request, querying in a first-level cache first according to the query request; if the query data corresponding to the query request exists in the first-level cache, the query data is returned to the requester, and the query data is cached in the first-level cache as thehot data of the first-level cache. If the first level cache can not obtain the query data, the second level cache is used for querying; if the query data corresponding to the query request exists in the secondary cache, the query data is returned to the requester, and the query data is cached to the hot data under the corresponding data type in the secondary cache as the secondary cache, thereby reducing disk overhead and improving storage efficiency.

Description

technical field [0001] The invention relates to the technical field of information processing, in particular to a double-buffer data storage method and a device and a storage medium for applying the method. Background technique [0002] With the development of network communication technology and the accelerated pace of life, there are more and more ways for people to obtain information, and the speed of obtaining information is also faster and faster. For example, many events are widely spread on the Internet even just after they happen, and The service providers that provide these hot news often need to deal with a large number of users querying extremely large amounts of data in a short period of time. The server usually uses the database to store the obtained data, and writes the stored data into the hard disk. However, if the user wants to query the data, if the data is directly read from the hard disk, it will cause excessive pressure on hard disk access. The usual ap...

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Problems solved by technology

[0003] However, most database operations involve disk operations, especially when a large number of data query requests are received in a short period of time, even if the data is searched in the cache with a faster reading speed, sometimes the cache access pressure will be too high. Once the cache with faster reading speed crashes, a large number of data query requests will directly read the hard disk of the database. Since the reading speed of the hard disk is not as good as the cache, it is foreseeable that the hard disk will also crash

[0004] In order to operate the disk as little as possible, the mainstream design will add a cache to the database, first go to the cache to find data, and then go to the database to query if there is no data in the cache. However, the traditional first-level cache can only cover the latest and hottest data, and cannot cover different functional modules. popular data

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