| 摘要 |
PROBLEM TO BE SOLVED: To preferentially store new unedited image data in cache means because it is assumed that the new unedited image data is later accessed for editing even though new data is not stored in the cache means in the conventional practice when the new data is stored in storage means because the new data never becomes an object of accessing and retrieval.SOLUTION: A data determination part 304 determines that data to be stored is new data different from data that has already been stored in a data storage part 306, a request source determination part 303 determines whether a device that transmits a data storage request can edit data, and a control part 307 performs update control over data on a cache storage part 308 on the basis of determination results of the data determination part 304 and a request source determination part 303.SELECTED DRAWING: Figure 3 |
