Identifier generation method and device

Abstract

The invention discloses an identifier generation method and device, which belongs to the technical field of computers. The specific embodiment of the method comprises the following steps: taking a name in an identifier acquisition request as a key, and acquiring a value corresponding to the key from mapping of a memory; wherein the values comprise a starting index value and an ending index value;updating the initial index value according to the index number if the index number in the identifier acquisition request is smaller than or equal to a difference value between the end index value andthe initial index value; and assembling the obtained initial index value and the updated initial index value to obtain an identifier. According to the embodiment, a globally unique and self-increasingidentifier is generated through program control, and expansion is facilitated. The identifier generated based on the index value is in a numerical form, the query efficiency is high, the occupied storage space is small, and the transmission data size is small.

Description

technical field [0001] The present invention relates to the field of computers, in particular to a method and device for generating an identifier. Background technique [0002] In the Internet industry, sometimes it is necessary to concurrently obtain unique self-incrementing identifiers (ID, Identifier) ​​between several systems to meet business requirements, and it is also necessary to count the status of each system's acquisition of identifiers. In the prior art, an auto-increment ID or a universally unique identifier (UUID, Universally Unique Identifier) ​​of a database can be used to generate a unique identifier. The identifier generated by using the auto-increment ID method is self-incrementing, and the identifier generated by using the UUID method is convenient for expansion. [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] (1) Use the self-incrementing ID method t...

AI Technical Summary

Problems solved by technology

[0004] (1) Use the self-incrementing ID method to generate identifiers. Due to the different syntax of different databases, additional processing is required during database migration; only the main database can generate self-incrementing IDs, which is prone to single-point failures; it depends on database resources and is difficult to expand;

[0005] (2) Using UUID to generate identifiers is out of order and cannot maintain an increasing trend; the generated identifiers are stored in the form of strings, which has low query efficiency, takes up a large storage space, and transmits a large amount of data

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