Core Data Background Contexts: Keep UI Responsive
A large import blocks scrolling when it runs on the main context. This guide gives you a small, testable way to approach the issue before changing a live system.
A practical workflow
- Perform the import on an appropriate background context and save in bounded units.
- Observe how changes merge into the UI and handle conflicts deliberately.
What to check
Managed objects belong to their context; pass identifiers or values across queues. Compare the result with the original problem and record what changed. If a measurement or test does not support the change, revisit the assumption rather than adding more complexity.
Keep the experiment small enough to reverse. Document the starting state, the change and the result so another person can repeat the process. Product menus and versions can change, so check the current documentation for your environment.
Official reference: Read the documentation.