You write code that loops and checks for an object in Core Data with that identifier, then creates a new object from the JSON data if it doesn’t exist (yes, that could be optimized). It may look like everything is going fine because your UI is still responsive through most of that ...
404 Not Found: The server cannot find the resource (web page) based on the client's request. With this code, the website designer can set a personality page for "the resource you requested could not be found" 408 Request Timeout: The server waited too long for the request sent by the...