Swift Actors for Thread-Safe Persistence Patterns for building thread-safe data persistence layers using Swift actors. Combines in-memory caching with file-backed storage, leveraging the actor model to eliminate data races at compile time. When to Activate - Building a data persistence layer in Swift 5.5+ - Need thread-safe access to shared mutable state - Want to eliminate manual synchronization (locks, DispatchQueues) - Building offline-first apps with local storage Core Pattern Actor-Based Repository The actor model guarantees serialized access — no data races, enforced by the compiler. Us…