Data synchronization method and device

Abstract

The embodiment of the invention relates to the technical field of communication, and discloses a data synchronization method, which comprises the following steps of recording point location information of each node in a database cluster by using a normal state array; when the main node in the database cluster breaks down, obtaining point location information when the main node breaks down according to the normal state array, and recording the point location information in the abnormal state array; switching the main node according to the point location information in the abnormal state array when the fault occurs, and recording the switching information of the main node in the abnormal state array; and according to the raft protocol and the abnormal state array, transmitting information ofswitching of the main node to remaining nodes in the database cluster, wherein the remaining nodes include other nodes except the faulty main node and the switched main node. The embodiment of the invention further provides a data synchronization device. According to the data synchronization method and device provided by the embodiment of the invention, manual switching is not needed when the database nodes fail, and the timeliness and synchronization effect of data services are improved.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a data synchronization method and device. Background technique [0002] With the development of the times, people have higher and higher requirements for data redundancy security and business multi-active. To ensure remote disaster recovery and security of data, intra-city active-active and remote It has evolved into cross-computer rooms, and the real-time synchronization of data has also evolved from a native synchronization mechanism to a data synchronization technology based on middleware. At present, the cross-instance data real-time synchronization technology of the database mainly relies on the original log file and obtains the point information inside the file. [0003] However, the inventor found at least the following problems in the prior art: whether it is the original synchronization mechanism of the database or the synchronization technology based on middlewa...

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Problems solved by technology

[0003] However, the inventors found that there are at least the following problems in the existing technology: whether it is the original synchronization mechanism of the database or the synchronization technology based on middleware, manual intervention is required when the database node fails over, and the timeliness of data services cannot be guaranteed. Long repair time and unsatisfactory data synchronization effect

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