Data synchronization method, apparatus and system

Abstract

The invention discloses a data synchronization method, apparatus and system. The data synchronization method comprises the steps that a data synchronization source end generates a real-time notification for current data modification after determining that data of a source end database is modified, and sends the real-time notification to a data synchronization target end; and the data synchronization target end analyzes the real-time notification to obtain data modification related information after receiving the real-time notification, and updates cache of a target end database according to an analysis result. By applying the scheme, the target end can update the cache of the local database directly according to the information carried in the real-time notification after receiving the real-time notification, or initiate monitoring of the local database to update cache data in first time after local data is synchronized, thereby achieving the effect of shortening a synchronous updating time delay of the cache.

Description

technical field [0001] The present application relates to the technical field of databases, in particular to a data synchronization method, device and system. Background technique [0002] In the era of big data, for the purpose of disaster recovery, data owners generally build more than two data centers. In the traditional cold backup disaster recovery solution, the main data center is used to undertake core business, and other data centers are used to back up the data of the main data center. The problem of this solution is that the main data center and the backup center cannot be directly replicated. Therefore, the backup data center can only play a role when a disaster occurs, resulting in low resource utilization. In addition, the replacement of the main data center by the backup data center also requires a long processing time and relatively complicated operations, which often seriously affects the processing of normal business. [0003] Distributed multi-active data...

AI Technical Summary

Problems solved by technology

In the traditional cold backup disaster recovery solution, the main data center is used to undertake core business, and other data centers are used to back up the data of the main data center. The problem of this solution is that the main data center and the backup center cannot be directly replicated. The backup data center can only play a role when a disaster occurs, resulting in low resource utilization

In addition, the backup data center takes over from the main data center, which requires a long processing time and complicated operations, which often seriously affects the normal business processing.

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