11-authorization

Enforce RBAC policy and ownership checks by centralizing authorization logic in the service layer using guards and middleware. This ensures authenticated principals only perform permitted actions before any protected operation executes.

Handle 401, 403, and 404 error flows deterministically by applying centralized policy checks and safe denials. This guarantees authenticated users lacking permissions receive correct 403 responses while missing resources return 404.

Apply privileged overrides during authorization by configuring project-defined policy exceptions within the service layer. This allows specific authenticated principals to bypass standard ownership checks when permitted by custom rules.

You can use guards and decorators to centralize authorization logic across protected routes. This approach applies consistent policy checks and audit logging before reaching service-layer ownership validations.

Authorization middleware returns 403 instead of 404 when policy checks prioritize permission denial over resource existence. Deterministic error flows ensure safe denials prevent leaking whether unowned resources actually exist.

You need to authenticate users before applying policy checks and ownership validation. Authorization logic requires an authenticated principal to evaluate permitted actions and enforce service-layer ownership rules correctly.