Duplicate data controller, duplicate data control system, duplicate data control method, and duplicate data control program

摘要

PROBLEM TO BE SOLVED: To reduce the difference between the data reflecting the processing result of a message by a message processing device and the duplicated data reproduced by the duplicated data control device while reducing the processing load on the duplicated data control device. To. SOLUTION: A message received from a message processing device for processing a message is stored in a message storage unit, and update information reflecting the processing result of the message by the message processing device and the processing result are reflected in the update information. When the update message information indicating the message information is received, the processing result by the message processing device is reflected in the duplicate data stored in the duplicate data storage unit using the update information, and a predetermined condition is satisfied. Among the messages stored in the message storage unit, the message whose processing result is not reflected in the duplicate data is specified based on the updated message information, the specified message is processed, and the specified message is processed. Reflect the result in the duplicated data. [Selection diagram] Fig. 1