| 摘要 |
Users send requests to monitor an information resource on a communication network to a management system; the management system informs a monitoring system of the identification information for the monitoring destination resource. The monitoring system monitors the state of the monitoring destination resource on behalf of each user. When it is updated, the update information is sent to the management system. Then, the management system notifies the users of the update information, using a notifying interface corresponding to each user. Since the monitoring system monitors the resource in place of the users, access to the network by the users is reduced, reducing the load on the network.
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