state-management-patterns

Atomic writes ensure state saves completely or not at all, preventing partial writes that cause corruption. This Skill covers atomic write patterns for JSON persistence, file locking, and crash recovery so your application resumes from valid checkpoints.

File locking prevents race conditions when multiple processes access state simultaneously. This Skill applies standardized locking patterns to ensure only one writer updates state at a time, maintaining consistency across concurrent access.

Crash recovery relies on checkpoints and state versioning to resume from a known good state. This Skill provides patterns to save versioned checkpoints and migrate between schema versions, enabling reliable recovery without data loss.

State versioning tracks schema evolution and enables migration paths between versions. This Skill covers versioning patterns so you can update your state structure safely while preserving existing data and supporting rollback.

JSON persistence with atomic writes and file locking supports batch and user state tracking at any scale. This Skill resolves unreliable persistence by applying patterns for JSON serialization, concurrent access control, and crash-safe resumption.