AFNetworking忽略缓存

NSURLCache *sharedCache = [[NSURLCache alloc] initWithMemoryCapacity:0

                                                        diskCapacity:0
                                                            diskPath:nil];
[NSURLCache setSharedURLCache:sharedCache];
[sharedCache release];

原文：http://blog.csdn.net/majiakun1/article/details/39177165