Cache update control apparatus, cache update control method, and cache update control program

摘要

PROBLEM TO BE SOLVED: To enable access to an information source in an up-to-date state via a cache even when a plurality of information sources is updated in conjunction with the information sources.SOLUTION: A cache update control device comprises: a relevancy detection unit 41 that detects the first and second information sources on the basis of a prescribed reference when second information sources 600-1 to m are updated in conjunction with updating of a first information source 600-0 of information sources stored in a plurality of storage areas 60-0 to m is updated, and generates relevancy information 410 having addresses indicative of storage areas 60-0 to m associated with each other; and an update unit 42 that updates copies 51-0 to m of the first and second information sources in a cache device 50 where the copies 51-0 to m of the first and second information sources and the addresses indicative of the storage areas 60-0 to m having the first and second information sources stored are stored in association with each other with reference to the relevancy information 410 when updating about the first information source occurs.