AFNetworking disable caching

Question

I'm trying to get a JSON file from a server then display it in a table, this works fine, however, for some reason AFNetworking is caching the JSON file even after a app restart. How can I disable this?

 NSURL *url = [NSURL URLWithString:@"http://?json"];

    NSURLRequest *request = [NSURLRequest requestWithURL:url];

    AFJSONRequestOperation *operation = [AFJSONRequestOperation
                                         JSONRequestOperationWithRequest:request
                                         success:^(NSURLRequest *request, NSHTTPURLResponse *response, id responseObject)
                                         {

                                             self.dataget = [responseObject objectForKey:@"data"];
                                             [self.tableView reloadData];


                                         }
                                         failure:^(NSURLRequest *request, NSHTTPURLResponse *response, NSError *error, id responseObject)
                                         {

                                             [HUD hideUIBlockingIndicator];
                                         }];

    [operation start];

The json file is probably not cached server side: Cache-Control: no-cache[CRLF]

possible duplicate of [How To Disable AFNetworking Cache](http://stackoverflow.com/questions/9968050/how-to-disable-afnetworking-cache) — UpL1nK, Aug 08 '13 at 14:02

score 4 · Accepted Answer · answered Aug 08 '13 at 19:00

4

Cache behavior can be set on NSMutableURLRequest objects, with setCachePolicy:. Otherwise, the built-in shared NSURLCache will respect the caching behavior defined by the server (which I would recommend tuning and taking advantage of, rather than outright disregarding).

answered Aug 08 '13 at 19:00

mattt

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Stupid me, I did set an NSURLCache following a tutorial to `NSURLCache *URLCache = [[NSURLCache alloc] initWithMemoryCapacity:4 * 1024 * 1024 diskCapacity:20 * 1024 * 1024 diskPath:nil]; [NSURLCache setSharedURLCache:URLCache];` Removed that from the AppDelegate and works fine now. – Timothy Aug 09 '13 at 10:15
I cover this info & more in the following blog post : http://blog.originate.com/blog/2014/02/20/afimagecache-vs-nsurlcache/ – vfxdrummer Mar 14 '14 at 18:46

score 0 · Answer 2 · answered Aug 08 '13 at 13:22

0

AFNetworking doesn't do any caching. Also, the "Cache-Control" HTTP header tells the client not to cache the page (ie. AFNetworking), not the server.

It sounds like your server is caching the JSON page.

answered Aug 08 '13 at 13:22

Ant

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But, if this is the case, why does my browser show the most recent version of the JSON and the app doesn't? – Timothy Aug 08 '13 at 13:28
Hmm, interesting. AFNetworking uses the built-in NSURLCache, so I was wrong on that. What do you get if you visit the page via the browser on the iOS device/simulator? Is the device configured to access the server in the same way as the browser (ie. no proxies in between)? – Ant Aug 08 '13 at 15:47

score 0 · Answer 3 · answered Aug 08 '13 at 19:23

AFNetworking doesn't cache anything. You should probably check the cache control headers of the response. If i am not wrong then your server is sending some cache control headers which NSUrlConnection is taking into consideration. I would recommend you to set the caching policy of NSURLRequest to NSURLRequestReloadIgnoringLocalCacheData before making request to server

AFNetworking disable caching

3 Answers3