Hi,
I wish to ask you if could be a good idea to introduce in Rails a simple
complement to Sweepers that could reduce the effort of expiring cache,
something like that:
Rails.cache.fetch("recent_posts", :expires_when => [:create, Post])
The above example could setup a callback to expire "recent_posts" each time
that a Post is created.
Sometimes I would like to rely on something like that to expire cache in
place of sweepers/observers.
What do you think? There may be downsides with this approach?
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