auth-implementation-patterns

Master JWT, OAuth2, RBAC, and session management for secure, scalable auth systems.

• Authentication verifies user identity and issues credentials
• Authorization controls what actions users can perform
• JWT enables stateless, scalable token-based auth
• OAuth2 supports delegated auth and social login

• Stateless tokens (JWT) scale horizontally
• Refresh tokens extend access without re-login
• RBAC enforces role-based access control
• Session storage can be Redis-backed for scalability
• Token expiration prevents long-term credential exposure
• Secure storage of refresh tokens in database
• Clear separation between auth and authorization
• Supports SSO, social login, and multi-tenancy

1. 1.Implement JWT with proper signing and expiration
2. 2.Store and manage refresh tokens securely in DB
3. 3.Use middleware to verify tokens and attach user context
4. 4.Apply RBAC policies to enforce access control
5. 5.Integrate with OAuth2 for social login or SSO
6. 6.Design session storage with scalability in mind