iOS6+ offline management working like the native cache management

I am trying to add offline usage to an app. I simply need all the work done by NSURLRequest / NSURLCache, while being able to choose exactly the disk storage location, so I can put it in "/Library/Application Support/whatever" where it won't ever be deleted (without forgetting the flag so it's not synced on iCloud / iTunes).

I feel like I have to do all the work myself and I run in a first issue. NSURLCache is keeping in memory a dictionary where the keys are the NSURLRequest and the values are the associated NSCachedURLResponse. I'm doing the same but then, I can't write this dictionary on the disk as it isn't made of basic types.

Do you have an idea on how to write on disk such a dictionary?


I am in a similar situation, I need a cache that can be used when the app is offline or untile the app parses new data.

AFAIK everyone would recommend you:

But theoretically in iOS6 the NSURLConnection writes the cache to disk and you can use that cache as offline cache, but I still have to found out how.

So partial answer, will try to find out more and update the answer. :)

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