swift-actor-persistence

SKILL.md

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.

The actor model guarantees serialized access — no data races, enforced by the compiler.

| Actor (not class + lock) | Compiler-enforced thread safety, no manual synchronization | | In-memory cache + file persistence | Fast reads from cache, durable writes to disk | | Synchronous init loading | Avoids async initialization complexity | | Dictionary keyed by ID | O(1) lookups by identifier |

Thread-safe data persistence in Swift using actors — in-memory cache with file-backed storage, eliminating data races by design. Source: affaan-m/everything-claude-code.

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