Code for this project is on GitHubWhile doing a full re-write of Droplr's iOS app for the 2.0 launch, I couldn't find any good file/image caches out there had a particular feature I really wanted: extending item expiration whenever it's touched.I set out to write my own — which wasn't that much of a challenge — but somewhere along the process I had this crazy idea that perhaps (SQLite-backed) Core Data would be a much better tool for the job:No mismatch between cache index file and actual data stored;Trivial querying;Nice and easy object oriented code.Being a structured data stor...