Module user_settings_store 

Persistence-backed access to per-user prompt-caching settings.

Every read goes through the configured PersistenceLayer, and every update is written before it is returned. The in-memory persistence provider intentionally gives process-lifetime behavior; configured durable providers never silently fall back to process memory when a read or write fails.

Structs

UserSettingsStore

Thread-safe persistence-backed store for per-user caching preferences.

UserSettingsUpdate

Partial update applied to one verified principal’s settings record.

Enums

PromptCachingPreferenceUpdate

Four-state patch value for the nullable prompt-caching preference.