Simple Concurrent Core Data

I’ve done a fair amount of research over the past few days, but I’m not sure what the current best practice is for concurrent Core Data. The most relevant post seems to be this blog post, but in light of this analysis about the performance of different concurrency methods, it seems that the modern way with parent contexts might not be the best. Also, this example from Apple doesn’t implement the best practice mentioned in Apple’s own concurrency guide that recommends NOT using the default NSConfinementConcurrencyType.

In light of all of this, what is the simplest and best way to implement concurrency with Core Data? All I need is a background thread the do some long writes to Core Data without hanging up the UI. Code examples are appreciated.

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