Axiom Storage Management Ref

If you've ever wondered whether iOS lets you mark cache files as "purge me last," this is your answer. It's a comprehensive reference covering storage pressure APIs, purging policies, and the right way to check disk space on iOS 5.0+. You get the modern capacity APIs from iOS 11, backup exclusion patterns, and how to set purge priorities so your cached data doesn't vanish prematurely. It's dense documentation rather than executable code, but sometimes you just need someone to compile the scattered Apple docs into one place. Saves you an hour of searching Stack Overflow and Apple's developer forums.