Research on the Synchronization Technology of Global Catalog Views with Multiple Nodes in Different Locations

This paper briefly introduces that in the face of the need for cataloging, sharing and synchronization of data from multiple locations in the fields of space environment monitoring and target monitoring, based on the current technical status and research objectives, an incremental log capture method is proposed. By constructing a data synchronization daemon program, the incremental log information of the database is captured and parsed. Binary file difference comparison, file system monitoring by file filter drivers are carried out, and catalog update files are intercepted and formed. After encryption and compression, these files are transmitted to other nodes. The receiving nodes obtain the catalog update files through the data synchronization daemon program, decrypt and decompress them, and then update the node databases, thus achieving a closed loop of the task of data synchronization among multiple nodes in different locations. This technical method has no master or slave nodes, and each node has the ability to synchronize data to other nodes. It meets the needs of the synchronization work of global catalog views of multiple nodes in different locations in the fields of space environment monitoring and space target monitoring. It can be extended to other similar fields and has wide applicability.