Flask application instance. templates/: HTML templates. static/: Static assets (CSS, JavaScript, images). models/: Database models. forms/: Form classes. requirements.txt: Dependency list.

Functionality User Registration: Secure registration with password hashing. Login: Secure login with session management. Password Recovery: Optional password recovery feature. Protected Routes: Access-restricted routes. CSRF Protection: Built-in CSRF protection. Input Validation: Form input validation. Caching: Performance optimization through caching.

Security Features Password Hashing: Secure password storage with Flask-Bcrypt. User Session Management: Secure sessions with Flask-Login. SQL Injection Protection: Protection through SQLAlchemy's ORM. CSRF Protection: Built-in protection. Input Validation: Validation for secure user input.

Dependencies Flask: Web framework. Flask-SQLAlchemy: Database ORM. Flask-WTF: Form handling and validation. Flask-Bcrypt: Password hashing. Flask-Login: User session management. Flask-Caching: Performance optimization.

Templates index.html: Homepage. login.html: Login page. register.html: Registration page. protected.html: Protected route example. Static Assets styles.css: CSS styling. script.js: JavaScript functionality.

Author V.Karthik