AFNetworking - do not cache response
Solution 1
Make long story short, just define your AFNetworking manager:
AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
[manager.requestSerializer setCachePolicy:NSURLRequestReloadIgnoringLocalCacheData];
Enjoy!
Solution 2
What you are experiencing is the effect of the URL cache (see NSURLCache).
The caching behavior of the request can be defined by setting a "Cache Policy" for the NSMutableURLRequest
object, e.g.:
NSMutableURLRequest* request = ...;
[request setCachePolicy: myCachePolicy];
The default caching behavior (NSURLRequestUseProtocolCachePolicy
) is appropriate for the current protocol, which is HTTP. And for the HTTP protocol, a GET requests will be cached by default!
And, AFNetworking does not change the default behavior of the request!
Now, you could set another cache policy, for example:
NSURLRequestReloadIgnoringLocalCacheData
Specifies that the data for the URL load should be loaded from the originating source. No existing cache data should be used to satisfy a URL load request.
This is likely the desired behavior you want to achieve:
[request setCachePolicy: NSURLRequestReloadIgnoringLocalCacheData];
The problem here is, that the super "convenient" API does not provide a way to configure the URL cache behavior of the request. You cannot access the used request at all.
Thus, I would suggest to use a lower level API where you have control about the created NSMutableURLRequest
object, and set the cache policy accordingly.
Solution 3
try to add some rubbish at the end of your URL (for example, timestamp)
kDataUrl = [NSString stringWithFormat:@"%@?%f", kDataUrl, [NSDate timeIntervalSinceReferenceDate]];
In this case, you would request fresh data every time. That works for me))
Solution 4
Just do:
manager.requestSerializer.cachePolicy = NSURLRequestCachePolicyReturnCacheDataElseLoad
Solution 5
With AFNetworking 3:
NSURLSessionConfiguration *sessionConfiguration = [NSURLSessionConfiguration defaultSessionConfiguration];
sessionConfiguration.requestCachePolicy = NSURLRequestReloadIgnoringLocalCacheData;
AFHTTPSessionManager *manager = [[AFHTTPSessionManager alloc] initWithBaseURL:baseURL
sessionConfiguration:sessionConfiguration];
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soleil
Updated on June 14, 2022Comments
-
soleil almost 2 years
I'm using this code to pull a simple JSON feed from a server:
AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager]; manager.responseSerializer = [AFJSONResponseSerializer serializer]; [manager GET:kDataUrl parameters:nil success:^(AFHTTPRequestOperation *operation, id responseObject) { NSLog(@"response: %@", responseObject); } failure:^(AFHTTPRequestOperation *operation, NSError *error) { NSLog(@"JSON DataError: %@", error); }];
It works. However, after I change the JSON file at
kDataUrl
, and verify that the change is made in a browser, when I run the app again, I still get the previous response.It seems that AFNetworking is somehow caching the old response. I do not want this behavior. I want to download the current feed. Is there some kind of setting or parameter I need to set to turn off caching?