i see clinton supporters are throwing themselvea behind spez . all 4 of u <| sep |> yeah thats why i started for funnnn I love making vidoes . THANKS <| sep |> You said you have large data sets so instead of holding all of your JSON objects in memory , you can only load what you need with Core Data . Will make your objects queryable . Can serve as an offline cache . Looks like a feature you need if you want to host much of the content in your server , but keep some on the user ' s device . Use NSManagedObjects instead of making your own Swift objects . You still need to write code for converting your objects into JSON thoughthere doesn ' t seem to be a way around that . They say Realm is a good alternative , but I ' ve never used it .