| 摘要 |
A content management system interacts with a content provider to store content items of the content provider within content storage of the content management system, where it is available to the users. Before obtaining and/or storing a content item of a content provider, the content management system determines whether it already has stored that content item, either for the same user or for other users of the content management system. In one embodiment, the content management system may include content subscription functionality that manages subscriptions of users to content of a content provider. In one embodiment, the subscription functionality handles the establishment of requested subscriptions, which includes identifying groups of users who have the same subscriptions, and also handles obtaining new content items provided by the content providers as part of those subscriptions. |
