| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a relay device or the like which can efficiently reduce traffic in a communication network.SOLUTION: A relay device 100 comprises a control unit 300. Before a specific expiration date comes, when it is determined that an expiration date associated with content comes, the control unit 300 changes the expiration date to a date after a specific expiration date, and associates first content and a changed expiration date with each other to store them in a storage unit 200 and transmit them.</p> |
