Hi! I need to cache an overview page that lists the latest events
(messages, documents, etc). By the side of each event I show the user
who created it (including the user's avatar). I have tried to use a
cache this with the cache_key of the page that holds the contents. In
the belongs_to method of each event I added :touch => true so the page
get updated when something changes.

This works great until someone changes it's personal information or
avatar image. So the problem is, how do I invalidate the cache when an
association gets updated?

Cheers,
Fredrik Martenson

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