How to set expiration time for a link send to Email?

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I send a link as email to the users asking him to reset the password. Clicking on the link redirects to a page in my project. How can i set the expiration time for this link, and how do i know if this link is not re used again? Whats the best way to do this?

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Posted 4-Aug-14 2:07am

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OriginalGriff · Answer 1 · 2014-08-04T02:29:00

The way I do it is to have a query string with a Guid attached to the link address.
The page it addresses access the DB and if a record for that Guid exists, checks the expiry date in the DB. If all is fine, delete the DB row, and action the reset.

Anything wrong, and dump the row, do nothing.