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A distributed cache range query method, device and system

A technology of distributed cache and query method, applied in the fields of instruments, computing, electrical digital data processing, etc., can solve problems such as poor query performance, and achieve the effect of multi-level range query

Active Publication Date: 2018-12-28
ADVANCED NEW TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, since the range query of the current distributed cache needs to be implemented through the database index, without breaking away from the strong dependence on the database, the query performance is relatively poor

Method used

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  • A distributed cache range query method, device and system
  • A distributed cache range query method, device and system
  • A distributed cache range query method, device and system

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Embodiment Construction

[0019] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described The embodiments are only some of the embodiments of the present application, but not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0020] In order to make the embodiment of the present application easier to understand, first, a possible application scenario of the embodiment of the present application is illustrated. For example, the embodiments of the present application may be applied to an independent query server that is different from one or more cache servers...

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Abstract

A distributed cache range querying method comprises: prestoring, in a storage area of memory, identifier values, corresponding to field values that can be used for range querying, in keywords used for mapping cached data, and creating a corresponding original keyword set for each identifier value; in response to a received relationship range querying request, finding, from the storage area, identifier values corresponding to endpoint values of a specified range of at least one field value of at least two field values; finding an original keyword set corresponding to all identifier values within the specified range of the at least one field value; and finding, from the found original keyword set, keywords of the at least two field values meeting a specified relationship, to obtain a keyword set corresponding to the relationship range querying request, so as to implement multilevel range querying decoupled from a database. In addition, also disposed are a distributed cache range querying device and system.

Description

technical field [0001] The present invention relates to distributed cache, in particular to a distributed cache range query method, device and system. Background technique [0002] Distributed cache is a data cache method that stores cached data in the form of key-value (keyword-cached data) in the memory Hash table through a distributed cache server cluster. Distributed cache reduces the number of accesses to the database by caching data and objects in memory and improves data access speed. [0003] At present, in order to support the range query of the distributed cache, the range query of the associated key is realized mainly by establishing an index supporting the range query in the relational database. When the server receives a range condition query request, it uses the index of the relational database to query the associated key that meets the specified range according to the range query condition, and then directly queries the key in the distributed cache to obtain ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/30
CPCG06F16/00
Inventor 湛滨瑜于君泽
Owner ADVANCED NEW TECH CO LTD