swift-actor-persistence

Thread-safe data persistence in Swift is achieved by using an actor-backed repository to serialize access to shared mutable state. This approach eliminates data races by design, combining an in-memory cache with file-backed storage for durable offline-first local data.

An actor-based repository handles concurrent file writes by serializing access to shared mutable state, ensuring only one operation occurs at a time. It uses atomic file writes to guarantee that durable offline storage is never partially written or corrupted.

Yes, you can use this actor-backed persistence with generic Codable and Identifiable Swift models. The LocalRepository is designed to accept any generic item conforming to these protocols, enabling simple CRUD operations through its async API.

The best way to cache data locally without manual locking in Swift 5.5+ is using an actor-based LocalRepository. Actors handle serialization automatically, providing an in-memory cache and file-backed persistence without explicit locks or synchronization overhead.

No, this Swift persistence solution does not require external dependencies or libraries. It relies entirely on native Swift 5.5+ concurrency features and standard Codable protocols to provide safe, offline-first local storage with atomic file writes.

You should avoid using actors for local data persistence when you need complex relational database queries or massive dataset indexing, because this actor-based repository focuses on simple CRUD operations with in-memory cache and flat file-backed storage.