core-data-expert

Core Data stack setup for production apps involves configuring NSPersistentContainer or NSPersistentCloudKitContainer with safe saving patterns, merge policies, and persistent history tracking to ensure reliable data flow. Describe your deployment targets to generate an optimal setup plan.

Core Data migrations in iOS 17+ are best handled using staged migration strategies, alongside lightweight and deferred options, to safely evolve your schema without data loss. The Skill provides guidance on selecting and implementing the correct migration path for your scenario.

Core Data concurrency with Swift Concurrency requires strict context management and cross-context data flow to prevent race conditions. The Skill provides guidance on integrating async patterns to ensure safe background processing and UI updates.

Yes, you can use NSPersistentCloudKitContainer to sync Core Data with CloudKit. The Skill delivers sync design, diagnostics, and debugging guidance to configure robust CloudKit synchronization across Apple platforms.

Core Data fetch requests cause performance issues when inefficiently configured or lacking proper batching. The Skill provides performance tuning guidance and best practices for NSFetchedResultsController to optimize fetches and UI updates.

Persistent history tracking in Core Data is needed when processing background changes or synchronizing data across multiple contexts. The Skill offers best practices for implementing tracking to support safe merging and CloudKit sync.