Distributed cache range query method, apparatus and system
A technology of distributed cache and query method, which is applied in the direction of instrumentation, computing, electrical digital data processing, etc., can solve the problem of poor query performance and achieve the effect of multi-level range query
Active Publication Date: 2016-05-11
ADVANCED NEW TECH CO LTD
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[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
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[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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The invention discloses a distributed cache range query method. The method comprises the steps of pre-storing an identifier value corresponding to a field value capable of being used for a range query in keywords used for mapping cache data into a storage region of a memory, and establishing a corresponding original keyword set for each identifier value separately; and in response to a received relational range query request, finding out an identifier value corresponding to an end point value in a specified range of at least one field value in at least two field values from the storage region, finding out the original keyword set corresponding to all identifier values in the specified range of the at least one field value, finding out keywords with at least two field values meeting a specified relationship from the found original keyword set, and obtaining a keyword set corresponding to the relational range query request, thereby realizing a multi-level range query decoupled to a database. In addition, the invention discloses a distributed cache range query apparatus 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 ...
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CPCG06F16/00
Inventor 湛滨瑜于君泽
Owner ADVANCED NEW TECH CO LTD