swift-actor-persistence

Implement thread-safe local data persistence with Swift actors.

1|Updated Feb 24, 2026
One-click install
npx skills add https://github.com/kmshdev/claude-swift-toolkit --skill swift-actor-persistence-kmshdev
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: swift-actor-persistence
Source: https://github.com/kmshdev/claude-swift-toolkit/tree/main/skills/swift-actor-persistence
Command: npx skills add https://github.com/kmshdev/claude-swift-toolkit --skill swift-actor-persistence-kmshdev

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Thread-safe local data persistence in Swift is achieved using actors to replace manual synchronization and avoid data races when multiple parts of the app access shared state.

Core Features & Use Cases

  • Actor-based LocalRepository with in-memory cache and file persistence
  • Safe async access to data with no manual locking
  • Use cases include offline-first apps, caches, and small data stores that need concurrency safety

Quick Start

Create a LocalRepository for your model and start performing save, loadAll, and delete operations to persist data.

Frequently Asked Questions about swift-actor-persistence

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I handle thread-safe local data persistence in Swift?

Thread-safe local data persistence in Swift is achieved using actors to replace manual synchronization and avoid data races when multiple parts of the app access shared state. This approach provides safe async access to data without manual locking.

What is the best way to build an offline-first cache in Swift without data races?

An offline-first cache in Swift without data races is built using an actor-based LocalRepository with an in-memory cache and file-backed persistence. This model ensures safe concurrent access by isolating state management within the actor.

How do Swift actors replace manual locking for local storage?

Swift actors replace manual locking for local storage by automatically serializing access to their mutable state. This prevents data races during concurrent operations like save, loadAll, and delete, eliminating the need for manual synchronization.

Can I use an actor-based repository for small data stores in Swift apps?

Yes, you can use an actor-based repository for small data stores in Swift apps. This approach is specifically designed for caches and offline-first apps that require concurrency safety without the overhead of complex manual locking mechanisms.

When do I need actor isolation for file-backed persistence in Swift?

You need actor isolation for file-backed persistence in Swift when multiple asynchronous tasks access the same local repository simultaneously. It prevents data races by ensuring safe, serialized access to the in-memory cache and underlying files.

Does the actor model work for both in-memory caching and file persistence in Swift?

Yes, the actor model works for both in-memory caching and file persistence in Swift. A single actor can manage an in-memory cache while simultaneously handling file-backed persistence operations safely across concurrent calls.