I'm not sure there's much of a reason to distinguish these cases from caching. You're still designing the system the same way... your main considerations are s

I'm not sure there's much of a reason to distinguish these cases from caching. You're still designing the system the same way... your main considerations are still, "why/how is it OK if this thing is reset/cleared/rolled-back at any moment?" and "why/how is the data here up-to-date/recent enough for my cases?"