Exposed button to clear the cache

It could be nice to have the choice to add a button that allow the user to empty the view cache and then to get the last/updated version of the view.
Use case:
I have complicated views with a lot of data; the users are happy to have a quick access to them thanks to the cache. But sometime, they are changing some data and they would like to have this change directly reflected in some view... Note that this is not mandatory, in some case they don't need this.
Thus, my idea is when a user need/want to see the updated version of a view, they could press a button that will re-construct the view and the cache...

Maybe there is already a module for this? Or some code to start over?