Non-stop migration method and device for image data between heterogeneous systems

Abstract

The invention discloses a non-stop migration method and device for image data between heterogeneous systems. The method comprises the following steps: packaging a migration data packet; marking a first label on the migration data packet of which the modification time is earlier than the migration starting time, and marking a second label on the migration data packet of which the modification timeis later; directly migrating the migration data packet of the first label into a migration system cache; comparing the image identifier in the migration data packet of the second label with the imageidentifier in the migration data packet migrated into the system cache; if the same image identifier exists, replacing the migration data packet of the same image identifier in the cache with the migration data packet of the second label; if the same image identifier does not exist, directly migrating the migration data packet of the second label into the cache; and after all the images are migrated to a cache of the immigration system, storing the migration data packet to a target storage position according to a storage rule of the immigration system. According to the invention, accurate migration of image data between heterogeneous systems under the condition of no shutdown can be achieved.

Description

technical field [0001] The invention relates to the technical field of data migration, in particular to a method and device for non-stop migration of image data between heterogeneous systems. Background technique [0002] This section is intended to provide a background or context to embodiments of the invention that are recited in the claims. The descriptions herein are not admitted to be prior art by inclusion in this section. [0003] During the construction and development of a bank's IT system, it often undergoes several system transformations and replacements and the migration of massive historical data, especially unstructured data such as image data. Image data includes image metadata and image files, where the metadata is the description information of the image file, which is stored in the Sql relational database, and the image file is the image itself, which is stored in the NoSql non-relational database. [0004] (1) The migration-in system and the migration-ou...

AI Technical Summary

Problems solved by technology

[0004] (1) The migration-in system and the migration-out system use heterogeneous storage media, the table structure design related to image metadata and the storage media for storing image files also change, making data migration not simply data export and import

[0005] (2) The massive stock of data makes the migration impossible to complete in a short period of time (24 hours), it may take several days or months to complete, and the process of migrating data does not stop the bank's IT system, that is, the process of migrating data is not handled by the bank During the rest period of the business (such as night), the image data will still be stored in the transfer-out system or the currently stored image data will be modified during the working hours of the bank processing business (such as daytime), that is to say, the data will be transferred to the transfer-in system. During the migration process, the image data in the migration system changes dynamically

Images