Django: how to automatically invalidate cache when data changes via Admin panel?

The caching framework looks pretty awesome and I'd like to use it sitewide. Rather than set an explicit expiry time for my views, I'd prefer to cache them indefinitely and only invalidate/delete the cache when the content changes. Dream scenario, right?

Is there some way to hook into Django's automatic admin so that when a CRUD operation happens, the relevant cache gets deleted? I expect I'd have to somehow tell the admin panel which model should invalidate which class, but in principle, is this possible? Some kind of callback I can add? Any alternatives?

thanks! Matt