auth-implementation-patterns

RBAC assigns permissions to roles rather than individuals, enforcing least-privilege access. You combine role checks with per-resource ownership validation to ensure users can only interact with data they are authorized to access across services.

Password security requires hashing, salting, and secure storage practices. Combined with rate limiting, these defenses protect authentication endpoints from brute-force attacks and credential stuffing attempts during API authentication flows.

Token lifecycle management governs JWT issuance, refresh, and revocation. Handling short-lived access tokens and rotating refresh tokens prevents stale session exploitation and maintains scalable session management across enterprise workloads.

Authentication verifies user identity while authorization enforces what resources they can access. APIs need both to confirm identity via tokens and then apply RBAC or permission checks to protect user data and prevent privilege escalation.