Saving middleware messages to disk by dividing into common and non-common data

摘要

A method for controlling the persistent storage of message data associated with a message oriented middleware system comprises determining 315, via a comparator, whether the message contains common data, and, if so, extracting the common and non-common data 320 for a persistor. The persistor then determines 330 whether the common data has already been saved. If so, then only the non-common data is saved 340; otherwise both common and non-common data are saved 335 separately. The common data may comprise the structure of the message, and may be assigned a unique reference. This allows for reduced data storage and overhead, whilst preserving essential data for reconstruction in the event of a system error.