Can user data be cached or stored, and for how long a period of time?
In general, user data may be stored and cached for up to 24 hours but there are types of user data that may be stored or cached for longer periods of time. In particular, if you are caching sign-on through OAuth, the Authenticated Token Value may be stored indefinitely (unless or until it is revoked). Pursuant to the restrictions outlined in the Yahoo! Developer Network Guidelines, Updates also may be stored indefinitely, unless a user or Yahoo! requests deletion. Please refer to the Yahoo! APIs Terms of Use, associated guidelines, and these FAQ for more information.
