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Abhay Singh Kathayat
Abhay Singh Kathayat

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Django vs Flask: 100 Advanced Interview Questions for Senior Developers

Core Django Questions

  1. What is the Django ORM, and how does it work?
  2. Explain the MTV architecture in Django.
  3. How do you define and use custom Django middleware?
  4. What is the difference between class-based views (CBVs) and function-based views (FBVs)?
  5. Explain signals in Django and provide real-world use cases.
  6. How do you handle database migrations in Django?
  7. What is the purpose of Django’s settings.py?
  8. Explain the role of the admin interface in Django.
  9. What is QuerySet chaining, and how can it improve performance?
  10. How do you implement file uploads in Django?

Core Flask Questions

  1. How does Flask's WSGI application object work?
  2. What are Flask blueprints, and how do you use them?
  3. How do you manage sessions in Flask?
  4. What is the purpose of Flask’s Jinja2 templating engine?
  5. How do you define and use Flask extensions?
  6. How do you configure Flask applications for different environments?
  7. What is the difference between Flask.request and Flask.g?
  8. How do you use Flask’s URL routing?
  9. How do you implement error handling in Flask?
  10. What are the differences between Flask-SQLAlchemy and Django ORM?

Advanced Django Topics

  1. How do you optimize Django QuerySets for performance?
  2. What are Django’s database backends, and how do you choose the right one?
  3. Explain the purpose of Django Rest Framework (DRF).
  4. How do you implement authentication and authorization in Django?
  5. What are Form validations, and how are they handled in Django?
  6. How do you handle asynchronous tasks in Django with Celery?
  7. Explain Django caching mechanisms and use cases.
  8. How do you deploy a Django application to production?
  9. What are Django’s built-in validators, and how do you use them?
  10. How do you secure a Django application against common vulnerabilities like CSRF, XSS, and SQL Injection?

Advanced Flask Topics

  1. How do you implement asynchronous functionality in Flask?
  2. Explain the role of Flask’s request and response cycle.
  3. How do you structure a large Flask application?
  4. How do you implement user authentication in Flask?
  5. What are Flask hooks, and how do you use them?
  6. How do you use Flask with WebSocket communication?
  7. What is Flask-Migrate, and how does it simplify database migrations?
  8. How do you optimize Flask applications for high traffic?
  9. Explain the role of Flask-Caching and its strategies.
  10. How do you implement error tracking and logging in Flask?

Django vs. Flask

  1. When would you choose Django over Flask, and vice versa?
  2. Compare the scalability of Django and Flask.
  3. How does Django handle templating compared to Flask?
  4. What are the performance trade-offs between Django and Flask?
  5. Discuss the learning curve for Django and Flask for new developers.
  6. How does the community support for Django differ from Flask?
  7. Compare the built-in features of Django and Flask.
  8. How does routing differ between Django and Flask?
  9. Which framework is better suited for RESTful APIs, Django or Flask?
  10. How do Django’s ORM capabilities compare to Flask-SQLAlchemy?

Testing and Debugging

  1. How do you write unit tests in Django?
  2. What is the purpose of Django’s test client?
  3. How do you test Flask applications using pytest?
  4. Explain the role of mocking in testing Django and Flask applications.
  5. How do you handle debugging in production for Django?
  6. How do you log errors effectively in Flask?
  7. What are the differences between test-driven development (TDD) in Django and Flask?
  8. How do you write integration tests for APIs in Django and Flask?
  9. What tools do you use for performance testing in Django?
  10. How do you ensure code coverage in Flask applications?

Real-World Scenarios

  1. How do you implement multitenancy in Django applications?
  2. How do you build a REST API in Flask?
  3. How do you handle internationalization and localization in Django?
  4. How do you implement real-time features in Flask?
  5. What are best practices for managing large data uploads in Django?
  6. How do you integrate Celery with Flask for background tasks?
  7. What are common deployment challenges for Django applications?
  8. How do you handle CORS in Flask applications?
  9. Explain the role of middleware in Django and Flask applications.
  10. How do you optimize a Flask app for microservices architecture?

Security Best Practices

  1. How do you prevent SQL injection in Django and Flask?
  2. How do you handle CSRF protection in Django?
  3. How do you use Flask-WTF for secure form handling?
  4. What are Django’s password hashing strategies?
  5. How do you prevent directory traversal attacks in Flask?
  6. How do you secure Django and Flask applications against XSS attacks?
  7. What are secure cookie options in Flask?
  8. How do you implement OAuth2 authentication in Django and Flask?
  9. Explain the purpose of HTTPS-only configurations in production.
  10. How do you use Django’s built-in security checks?

Performance Optimization

  1. How do you optimize Django for high performance?
  2. What is Flask’s Werkzeug, and how does it impact performance?
  3. How do you reduce the latency of APIs in Django?
  4. Explain the role of query optimization in Flask-SQLAlchemy.
  5. How do you use caching in Django for performance improvement?
  6. What are best practices for handling static files in Flask?
  7. How do you optimize database queries in Django?
  8. What tools do you use for profiling Flask applications?
  9. How do you scale Django and Flask applications in the cloud?
  10. How do you minimize cold starts for serverless Flask applications?

Ecosystem and Tools

  1. How do you integrate Django with Celery for asynchronous tasks?
  2. How do you manage Flask extensions in large projects?
  3. What are the best practices for managing third-party libraries in Django?
  4. How do you implement API rate limiting in Flask?
  5. What tools do you use for logging in Django?
  6. How do you use Flask with Docker for containerization?
  7. Explain the purpose of Django Signals in real-world scenarios.
  8. How do you integrate Flask with Redis for caching?
  9. What are the advantages of using Django’s Celery integration?
  10. How do you integrate Flask with Message Queues like RabbitMQ?

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