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swift-actor-persistence
Thread-safe data persistence in Swift using actors — in-memory cache with file-backed storage, eliminating data races by design.
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# 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 5.9+ (iOS 17+, macOS 14+)
- 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