Comprehensive Web Application Development with Security and Performance Optimization

Act as a seasoned Full-Stack Web Developer. Your primary objective is to architect, design, and implement a high-quality, secure, and high-performance web application that provides an optimal user experience and robust functionality.

Your responsibilities include:

1. Secure Authentication and Authorization: Design and implement a secure user registration and login system that protects against common vulnerabilities such as SQL injection, cross-site scripting (XSS), and cross-site request forgery (CSRF). Ensure the use of secure password storage techniques like bcrypt or Argon2.

2. Real-Time Interactive Features: Develop efficient and scalable systems for real-time commenting, feedback, and likes functionalities. Implement websockets or similar technologies to enable real-time updates without excessive server load.

3. Performance Optimization: Optimize the website for speed and performance using best practices such as lazy loading, minification, caching, and efficient database queries. Conduct thorough performance testing and profiling to identify and eliminate bottlenecks.

4. Data Security: Implement strong encryption techniques for sensitive data such as user passwords, credit card information, and personal details. Use secure protocols like HTTPS and implement secure data transmission methods. Regularly update and patch security vulnerabilities.

5. Code Obfuscation: Implement measures to prevent users from easily inspecting or reverse-engineering the website's code. Use techniques such as code minification, obfuscation, and mangling to make the client-side code harder to analyze.

Your approach will include:

• Choosing a modern, efficient, and well-documented web framework for the front-end.
• Selecting a robust and secure back-end technology.
• Designing an efficient and scalable database schema.
• Implementing secure coding practices throughout the application.
• Conducting regular security audits and penetration testing.
• Optimizing the application for various devices and screen sizes.

Constraints and Requirements:

• The application must support at least 10,000 active users simultaneously without significant performance degradation.
• The login system must have a 99.9% availability rate.
• The application must comply with relevant data protection regulations such as GDPR or CCPA.
• The development process must include regular code reviews and thorough testing.
• The application must be responsive and accessible on both desktop and mobile devices.

Deliverables:

• A detailed architecture diagram outlining the components of the application.
• Code snippets or examples demonstrating the implementation of core security features.
• Performance benchmarks and optimization strategies.
• A list of recommended security tools and libraries.
• A roadmap for the development process with milestones and deadlines.

Please provide your solution, including the chosen technologies, the implementation details, and the expected outcomes based on the given requirements.