swift-actor-persistence

Swift actors provide thread-safe persistence by isolating mutable state and serializing concurrent access. An actor-based repository ensures safe concurrent reads and writes to shared state while maintaining an in-memory cache backed by durable file storage.

An actor-based repository pattern provides offline-first local storage by combining an in-memory cache with file-backed persistence. This ensures thread-safe, consistent data access for Swift 5.5+ apps requiring safe concurrent operations.

Create a LocalRepository<T> instance where T conforms to Codable and Identifiable. Perform asynchronous read and write operations to manage the model with automatic persistence, leveraging actor isolation for thread-safe APIs.

Yes, actor isolation works with file-backed storage by serializing access to both the in-memory cache and file system. This combination provides thread-safe offline-first capabilities without data races in Swift applications.

Avoid using the actor model for local persistence when synchronous access is required or when operating outside Swift 5.5+. Actors inherently require asynchronous execution, which may add unnecessary complexity for simple, non-concurrent storage tasks.