NSURLCache Uses A Disk Cache As Of iOS 5

While writing AFDownloadRequestOperation, a new subclass for AFNetworking, I discovered that the behavior of NSURLCache changed between iOS 4.x and iOS 5.x. Before iOS 5, NSURLCache just saved requests to memory, even if the documentation said otherwise – the diskCapacity property was silently ignored. This led to some open-source subclasses of NSURLCache, which retrofit disk caching. Most popular is SDURLCache and my enhanced, faster fork of it. Even Apple has an example online that shows how ...

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