5 Performance Improvements for Core Data in iOS Apps

Reach for quality!

Steven Curtis
5 min readMar 20, 2023
Photo by Reign Abarintos on Unsplash

My favourite way of persisting data is with Core Data.

It’s an integrated Apple Framework — so don’t worry about your third-party stuff here. I like to write a Core Data Manager that is testable and can even be mocked.

However, where are the performance improvements that can make your App, well, usable?

They’re right below!

Difficulty: Beginner | Easy | Normal | Challenging

Terminology

Core Data: A framework that allows you to manage the model layer objects in your application. Core Data does this by being an object graph management and persistence framework.

Prerequisites:

Stop using the viewContext!

That sounds a little bit strong. However, in my example Core Data Manager I have hard-baked the viewContext. Now…

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