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Marrying multiple http requests with Core Data

Forums > iOS

Hey,

Currently I'm working with an API that (for particular data) doesn't support multiget. So for example, I need to make around 500 requests to get all information about objects tied to my account (amount depending on a user). From that I need to create entities (or update existing ones if changed) in Core Data, to have a local copy.

Since I want to download the data concurrently I don't want to use main NSManagedObjectContext each time data is downloaded or spawn a background context each time I receive response (this would probably create a lot of threads).

How would you best tackle this task? Use OperationQueue/BlockOperation to download the data and when everything is done, spawn a background context (via performBackgroundTask) and store everything to Core Data in one blow (to not cause any merge conflicts too)? Or maybe use DispatchQueue with groups? Or maybe something else?

Thanks!

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