Data synchronization method and device, equipment and storage medium

Abstract

The invention discloses a data synchronization method, device and equipment and a storage medium, the method is applied to a server side located on the inner side of a one-way isolation gatekeeper, and the method comprises the steps that incremental log information of a first database located on the inner side of the one-way isolation gatekeeper is monitored and published through preset middleware; subscribing the incremental log message published through the preset middleware, and analyzing the incremental log message to obtain a data manipulation language in the incremental log message; the data manipulation language is sent to a client located on the outer side of a one-way isolation gatekeeper, so that the client forwards the data manipulation language to a second database located on the outer side of the one-way isolation gatekeeper, and the data manipulation language is executed through the second database, therefore, data synchronization based on the inner side and the outer side of the one-way isolation gatekeeper is realized. Through the technical scheme of the invention, real-time synchronization of data on the inner side and the outer side of the one-way isolation gatekeeper can be realized under the condition of ensuring network security.

Description

technical field [0001] The invention relates to the technical field of network security, in particular to a data synchronization method, device, equipment and storage medium. Background technique [0002] In industrial networks or government networks, in order to ensure network security and reliability, the control system of the equipment is generally not allowed to access the public network. In order to obtain data on the protected network side, a one-way isolation gatekeeper is generally used Network isolation, data can only flow from the inside of the gatekeeper to the outside of the gatekeeper, such as figure 1 It shows the network environment isolated by one-way gatekeeper. In order to be able to monitor the data of the internal system of the gatekeeper or perform business analysis or other operations on the system outside the gatekeeper, at this time, it is necessary to synchronize the data inside the gatekeeper to the outside of the gatekeeper in real time. On the ou...

AI Technical Summary

Problems solved by technology

For a network with relatively high security requirements, this method does not meet the required security level after opening the IP and port, and there are certain security risks; and when the timing task is used and the synchronization frequency is high, resource performance is required. Higher, when there is no data change, it will be a waste of resources. When the synchronization frequency is low, the data change cannot be reflected in the data display outside the gatekeeper in time, and the real-time performance is poor

Another method is through the snapshot method. The snapshot is an instant image of the stored objects in the database at a certain moment. By sending the snapshot to the outside of the gatekeeper for data recovery, this method sends a large amount of data and the efficiency of restoring data is low.

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