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Data retrieval method and device

A data retrieval and data technology, which is applied in the computer field, can solve problems such as easy data tilt, constraints on data storage and retrieval flexibility, and achieve the effect of overcoming inflexible data retrieval and flexible and efficient data retrieval

Pending Publication Date: 2020-04-24
BEIJING JINGDONG SHANGKE INFORMATION TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the memory database is generally based on the KEY-VALUE data storage model, it greatly restricts the flexibility of its data storage and retrieval, and the data is easy to skew

Method used

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  • Data retrieval method and device

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Embodiment Construction

[0032] Exemplary embodiments of the present invention are described below in conjunction with the accompanying drawings, which include various details of the embodiments of the present invention to facilitate understanding, and they should be regarded as exemplary only. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the invention. Also, descriptions of well-known functions and constructions are omitted in the following description for clarity and conciseness.

[0033] figure 1 is a schematic diagram of the main steps of a data retrieval method according to an embodiment of the present invention, such as figure 1 Shown:

[0034] Step S101 represents receiving a data retrieval request, wherein the data retrieval request indicates an index field. The index field of the data is preset when the data is stored, and can be set by con...

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Abstract

The invention discloses a data retrieval method and a device, and relates to the technical field of computers. One specific embodiment of the method comprises the following steps: receiving a data retrieval request, wherein the data retrieval request indicates an index field; determining a hash value of the index field; determining an index tree corresponding to the hash value according to the hash value of the index field; and querying storage information corresponding to the hash value in the index tree as storage information of the data, wherein the storage information indicates a storage position of the data. The method comprises the steps of receiving a data retrieval request, wherein the data retrieval request indicates an index field; determining a hash value of the index field; determining an index tree corresponding to the hash value according to the hash value of the index field; and querying storage information corresponding to the hash value in the index tree as storage information of the data, wherein the storage information indicates a storage position of the data.

Description

technical field [0001] The present invention relates to the field of computer technology, in particular to a data retrieval method, device, electronic equipment and computer-readable medium. Background technique [0002] In the current era of big data, the efficiency of data storage and retrieval has become crucial. At present, data retrieval is mainly through two levels, (1) with the help of file system storage of external physical media, data storage and retrieval operations are completed through IO (Input / Output, input / output), and the storage and retrieval technology represented by it There are traditional relational databases (such as Oracle and MYSQL) and distributed file storage systems (such as HDFS and ELASTICSEARCH) (2) in-memory databases (such as Redis and Memcached) implemented by means of memory. [0003] In the course of realizing the present invention, the inventor finds that there are at least the following problems in the prior art: [0004] Different sto...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F16/13G06F16/182G06F16/22
Inventor 郑承磊
Owner BEIJING JINGDONG SHANGKE INFORMATION TECH CO LTD