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Django Interview Questions and Answers 2026 - Top 10 Python Web Framework Questions - Admin - 03-21-2026
Django is the most popular Python web framework in 2026 used by Instagram, Pinterest, and Mozilla. Whether you are applying for a Python Developer, Backend Engineer, or Full-Stack role, these top 10 Django interview questions will help you prepare.
Keywords: Django interview questions 2026, Python web framework interview, backend developer Django, Django REST framework, Python developer interview
1. What is Django and its key features?
Django is a high-level Python web framework following the MTV (Model-Template-View) pattern. Key features include ORM for database operations, admin interface, URL routing, template engine, form handling, authentication system, and security protections against XSS, CSRF, and SQL injection.
2. Explain Django MTV architecture.
Model defines data structure and database schema using Python classes. Template handles the presentation layer with HTML and template tags. View contains business logic and connects models with templates. URLs map URL patterns to views. This separation enables clean, maintainable code.
3. What is Django ORM and how does it work?
Django ORM maps Python classes to database tables. It supports CRUD operations, relationships (ForeignKey, ManyToMany, OneToOne), queries with filter, exclude, annotate, and aggregate. Use select_related and prefetch_related to optimize queries. Migrations handle schema changes.
4. What is Django REST Framework (DRF)?
DRF is a toolkit for building RESTful APIs in Django. It provides serializers for data conversion, viewsets for CRUD operations, routers for URL generation, authentication classes, pagination, and filtering. DRF is the standard for building Django APIs.
5. How does Django handle authentication?
Django provides built-in User model, login/logout views, password hashing, session management, and permission system. Extend with custom user models using AbstractUser. Use django-allauth for social authentication. DRF supports JWT, token, and session authentication.
6. What are Django middleware?
Middleware processes requests and responses globally before they reach views. Built-in middleware handles security headers, sessions, authentication, CSRF protection, and content types. Custom middleware can add logging, request modification, or access control logic.
7. How do you optimize Django performance?
Use select_related and prefetch_related to reduce queries. Enable database indexing. Use caching with Redis or Memcached. Optimize templates. Use pagination for large querysets. Enable gzip compression. Use connection pooling. Profile with Django Debug Toolbar.
8. What are Django signals?
Signals allow decoupled applications to get notified when actions occur. Common signals include pre_save, post_save, pre_delete, and post_delete. Use them for logging, sending notifications, or updating related data. Avoid heavy processing in signal handlers.
9. How does Django handle database migrations?
Django migrations track model changes and apply them to the database. Use makemigrations to create migration files and migrate to apply them. Migrations are version-controlled Python files. Use squashmigrations to optimize. Support multiple databases and custom operations.
10. What is Django Celery and async task processing?
Celery is a distributed task queue for handling background jobs. Use it for sending emails, processing images, scheduled tasks, and long-running operations. Configure with Redis or RabbitMQ as message broker. Django 4+ also supports native async views and ASGI.
Conclusion: Django is a powerful framework for rapid web development. Master the ORM, DRF, middleware, and performance optimization to ace your Python backend interviews.
Tags: #Django #InterviewQuestions #Python #WebFramework #DRF #BackendDeveloper #PythonDeveloper #REST #Celery #Django2026