HRHResistantURLCache.m

@interface HRHResistantURLCache : NSURLCache
@end
 
@implementation HRHResistantURLCache
 
- (void)storeCachedResponse:(NSCachedURLResponse *)cachedResponse 
                 forRequest:(NSURLRequest *)request
{
    if (301 == [(NSHTTPURLResponse *)cachedResponse.response statusCode]) {
        return;
    }
    [super storeCachedResponse:cachedResponse forRequest:request];
}
 
@end