What is Django?

Django is a high-level web development framework for Python. It’s one of the most popular full-stack web frameworks in the Python ecosystem and a production-grade tool with tons of batteries included. If you master it, you’ll be able to use it in your own projects and become genuinely job-ready.

It was originally built in 2003 at the Lawrence Journal-World newspaper to help a small team ship features under tight deadlines, then open-sourced in 2005. That origin story still shapes the framework today: Django is opinionated, pragmatic, and biased toward getting things done quickly without sacrificing quality.

Django Batteries Included

“Django batteries included” refers to the philosophy that the framework should ship with everything you need for the common case. You don’t have to assemble fifteen libraries just to add a login form, an admin panel, and a database connection. Django gives you all that out of the box, with sensible defaults and a coherent design.

Compare this to micro-frameworks like Flask or FastAPI, where you pick every component yourself. Both philosophies are valid, but if your goal is to ship, Django’s “everything included” approach saves you from decision fatigue.

Key Features

  1. Object-Relational Mapping (ORM): Django includes a powerful ORM that lets you interact with the database using Python classes instead of raw SQL. You define models, run migrations, and Django handles the schema.

  2. Admin Interface: Probably Django’s most beloved feature. Once you register a model, you get a fully functional CRUD interface for free — perfect for internal tools, content management, and rapid prototyping.

  3. URL Routing: A clean, regex- or path-based URL routing system that maps URLs to views. URLs can be named, reversed, and namespaced — making refactoring painless.

  4. Template Engine: Django ships its own template engine that keeps HTML separate from Python logic. It’s intentionally limited (no arbitrary code in templates), which keeps templates readable and prevents the “logic in views, also logic in templates” trap.

  5. Forms: A form-handling system that covers HTML rendering, server-side validation, error display, and CSRF protection in one cohesive API.

  6. Security Features: Out of the box you get protection against CSRF, XSS, SQL injection (via the ORM), and clickjacking. Django takes security seriously and the docs explain why each protection exists.

  7. Authentication and Authorization: A full user model with login, logout, password hashing (PBKDF2 by default), password reset flows, and a permission system fine-grained enough for most apps.

  8. Middleware: A pluggable pipeline that lets you process every request and response — useful for logging, authentication, custom headers, rate limiting, etc.

  9. Static Files Handling: Tools for collecting, fingerprinting, and serving static assets (CSS, JS, images) efficiently in production.

  10. Internationalization and Localization: Built-in support for translating strings, formatting dates and numbers, and serving content in multiple languages.

  11. Testing Framework: A test runner built on top of unittest with extras like a test client, fixtures, and a transactional test case that rolls back the DB between tests.

  12. REST API Support: Not part of the core, but the Django REST Framework is the de facto standard for building APIs in Django, and it’s basically as well-supported as the framework itself.

  13. Caching Framework: A unified caching layer with backends for in-memory, file, database, Memcached, and Redis. You can cache full pages, fragments, or arbitrary objects.

  14. Signals: A pub/sub mechanism that lets decoupled apps react to model events (saves, deletes, logins, etc.) without tight coupling.

The Django Philosophy

A few principles you’ll see again and again in this series:

  • Don’t Repeat Yourself (DRY): if you find yourself writing the same thing twice, Django probably has an abstraction that fixes it.
  • Explicit is better than implicit: configuration lives in settings.py, not in environment magic.
  • Loose coupling, tight cohesion: apps should be self-contained and reusable across projects.
  • Less code: Django leans into Python’s expressiveness — you should be able to do a lot in a few lines.

These aren’t just buzzwords; they shape every API decision in the framework, and once you internalize them you’ll start to predict how Django works before you read the docs.

Websites Built with Django

Some popular sites known to be built with — or have been built with — Django at significant points in their history:

  1. Instagram — Django was used heavily during Instagram’s scale-up to hundreds of millions of users.
  2. Pinterest — used Django in the early years before evolving their stack.
  3. Disqus — the blog comment hosting service is built on Django.
  4. Dropbox — parts of the web interface use Django.
  5. Eventbrite — the event ticketing platform.
  6. Mozilla Add-ons — the website hosting Firefox extensions and themes.
  7. National Geographic — content-heavy site running on Django.
  8. The Washington Post — newsroom CMS workflows.
  9. Spotify — uses Django for parts of its backend tooling.
  10. NASA — uses Django for several public-facing sites.

(Note: large companies tend to have polyglot stacks. “Built with Django” usually means “Django is one of the languages in the mix,” not “Django serves every byte.”)

When not to use Django

To be fair: Django isn’t always the right choice.

  • If you’re building a tiny single-endpoint microservice, the framework is overkill.
  • If you need streaming/long-lived async connections (websockets, server-sent events) as your primary workload, an async-first framework like FastAPI or Starlette will feel more natural — though Django’s ASGI support has come a long way.
  • If you want to write a CLI, use Click or Typer; Django is for the web.

For everything else — content sites, dashboards, SaaS products, internal tools, e-commerce — Django is a fantastic default.

Conclusion

Django is a powerful, mature, and well-loved framework that strikes a great balance between productivity and depth. It gives you enough to ship a working app on day one, and enough flexibility to keep that app maintainable years later.

Happy coding!

Building something AI-, backend-, or data-heavy and want a second pair of eyes? I do consulting and freelance work — see my projects and ways to reach me at rajpoot.dev .