There are already several 3rd party packages that implement redis as a
django cache backend, for example https://github.com/niwinz/django-redis
We already have a base class for cache backends - and several implementing
it (such as memcache). I don't think there's much benefit taking on another
>> But here it is too late. settings.py continues, and *afterwords* all the
>> apps are scanned for their settings. you can't override them again in
>> settings.py after that.
> I'm a little unclear here.
>
> Is it too late because you want to be able to exclude settings from
> packages that are
