Describe how you would design a system to handle user authentication in a web application. What components would you include, and how would you ensure security?

## What to Cover 1. Components: database for user data, token generation, and expiration handling. 2. Security Measures: password hashing, rate limiting, logging failed login attempts. ## Strong Answer Framework Discuss technologies you would use (like OAuth, JWT), scalability considerations, and how you handle user data securely. ## Watch Out For - Comprehensive security practices must be stated to avoid common vulnerabilities.