AppDelegate.m

#define DEFAULT_MEMORY_CAPACITY 512000
#define DEFAULT_DISK_CAPACITY   10000000
 
HRHResistantURLCache *myCache = [HRHResistantURLCache alloc];
 
[myCache initWithMemoryCapacity:DEFAULT_MEMORY_CAPACITY
                   diskCapacity:DEFAULT_DISK_CAPACITY
                       diskPath:@"MyCache.db"];
    
[NSURLCache setSharedURLCache:myCache];