Primary and secondary copy election method, system, computer equipment and storage medium

Abstract

The application relates to a method, system, computer equipment and storage medium for electing master and backup copies. The method includes: each copy in the business cluster that satisfies the election condition elects a candidate master copy from the business cluster; the candidate master copy sends an arbitration request to the management cluster; the arbitration request is used to instruct the management When the dynasty of the candidate master copy is the same as that of the candidate master copy, update the dynasty of the business cluster, and determine the candidate master copy as the master copy of the updated dynasty; after determining the master copy of the updated dynasty, remove the master Each replica other than the replica sends a dynasty join request to the master replica; when the corresponding replica meets the dynasty join condition according to the dynasty join request, the master replica determines the replica that satisfies the dynasty join condition as the backup copy of the updated dynasty. This method can ensure the reliability of the master and backup replica election without increasing the replica deployment cost.

Description

technical field [0001] The present application relates to the field of computer technology, in particular to a method, system, computer equipment and storage medium for electing a primary and secondary copy. Background technique [0002] With the development of computer technology, technical systems based on computer technology are widely used in all walks of life, and some application scenarios have high requirements for the usability of technical systems, such as financial transaction scenarios such as securities, insurance and banking. The availability of business systems can be improved by adopting multi-copy redundancy. In multi-copy redundancy, it is necessary to elect a primary copy from multiple copies, and the primary copy provides external functions and organizes data and status among multiple copies. Synchronize. [0003] Currently, a majority voting mechanism is usually used to elect the master replica from multiple replicas. However, when the number of replica...

AI Technical Summary

Problems solved by technology

However, when the number of replicas is less than half due to a failure, the primary replica cannot be elected, which reduces the reliability of the election. In order to improve the reliability of the election, more replicas need to be deployed, which increases the complexity and cost of deployment.

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