| 摘要 |
<P>PROBLEM TO BE SOLVED: To transmit information showing the location of a device in which the content of an acquisition object is not deleted in response to a query for resolving a domain name in a distribution system in which a DNS is applied to a CDN. <P>SOLUTION: An information processing device performs the steps of: receiving a domain name from a query device; determining whether location information corresponding to the domain name is stored in a list; acquiring location information of a node device which stores contents associated with the domain name and second time information showing a period, or shorter than the period, until the time when the node device deletes the contents, if it is determined that the information is not stored; associating the acquired location information with the acquired second time information and with the received domain name to store them in storage means; prolonging a period shown by first time information corresponding to the domain name, if it is determined that the information is stored; transmitting the location information corresponding to the domain name to the query device; and deleting the corresponding location information from the storage means when the period shown by the first time information elapses. <P>COPYRIGHT: (C)2013,JPO&INPIT |
