This is a feature request 
I think it would be nice to have some key you can press as you are opening a screen or dashboard that would make it replace what is in cache. ie, make it reload instead of using what is in cache without clearing the entire cache. So you could keep most things cached, but force a screen to get the most current version when you know it has changed. Some screens are rather large and we don’t want to have to clear them from cache when just one screen has changed.