System Design: Instagram Architecture Deep Dive
How Instagram scaled Django to 2B+ users. Covers feed generation, image processing pipelines, Stories architecture, and PostgreSQL sharding strategies.
·12 min read · #system-design#instagram#feed
#django
30 posts · page 1 of 1
FastAPI vs Django vs Flask: Python Web Frameworks Compared
Compare FastAPI, Django, and Flask for Python web development. Understand performance, features, and ecosystem differences to choose the right framework.
·8 min read · #fastapi#django#flask
Django + Celery: Background Tasks and Task Queues
Integrate Celery with Django for background task processing — setup, writing tasks, retries, periodic tasks, and monitoring with Flower.
·6 min read · #django#celery#backend
Django Channels: Real-Time WebSockets
Add real-time WebSocket support to Django with Channels — consumers, routing, channel layers, groups, and building a live chat.
·6 min read · #django#websockets#channels
Django Custom Managers and Chainable QuerySets
Build custom managers and chainable QuerySets in Django to encapsulate query logic, keep views thin, and write expressive ORM code.
·5 min read · #django#orm#backend
Django Database Optimization: select_related, prefetch_related, and Beyond
Eliminate N+1 queries in Django with select_related, prefetch_related, Prefetch objects, annotations, and query profiling tools.
·6 min read · #django#database#performance
Writing Custom Middleware in Django
Build custom Django middleware — request/response processing, exception handling, middleware ordering, and real-world examples.
·6 min read · #django#middleware#backend
Django Multi-Tenancy: Shared Database Schema Patterns
Implement multi-tenancy in Django using shared database schemas — tenant models, middleware, filtered QuerySets, and data isolation.
·6 min read · #django#multi-tenancy#architecture
Django Caching with Redis: Per-View, Template Fragment, and Low-Level
Speed up Django with Redis caching — per-view cache, template fragment cache, low-level cache API, and cache invalidation strategies.
·6 min read · #django#caching#redis
DRF ViewSets and Routers: Clean API Endpoints Fast
Build REST APIs with Django REST Framework ViewSets and Routers — ModelViewSet, custom actions, filtering, and URL generation.
·5 min read · #django#drf#rest-api
Django Production Security Checklist and Hardening
Harden your Django app for production — security settings, CSRF, XSS, SQL injection, HTTPS, headers, secrets, and deployment checks.
·7 min read · #django#security#deployment
Django Signals Deep Dive: post_save, pre_delete, and Custom Signals
Master Django signals — connect to post_save and pre_delete, write custom signals, avoid common pitfalls, and know when to use them.
·6 min read · #django#signals#backend
Django QuerySets and ORM Optimization
How Django QuerySets lazily build SQL, how to avoid N+1 queries with select_related and prefetch_related, and patterns to keep the ORM fast under real load.
·4 min read · #python#django#orm
Django Admin Customization: A Practical Tutorial
Go beyond the default Django admin: customize ModelAdmin classes, list views, search, filters, inline editing, and admin actions to build a usable backoffice your team will actually enjoy.
·4 min read · #django#python#admin
Django Caching Strategies
Compare per-view, template fragment, low-level, and per-site caching in Django and learn when each pays off.
·4 min read · #django#caching#redis
Django Celery Task Queue Tutorial
A practical guide to wiring Celery into Django for background work, scheduled jobs, and reliable task processing.
·4 min read · #django#celery#python
Django Channels and WebSockets Tutorial
Add real-time features to Django with Channels. Build a WebSocket chat consumer, set up the ASGI server, and broadcast events with channel layers.
·3 min read · #django#channels#websockets
Django Class-Based Views: A Practical Tutorial
Understand Django's class-based views by building from View up to ListView and UpdateView. Learn the MRO, mixins, and when CBVs beat function-based views in real projects.
·4 min read · #django#python#views
Django Middleware and the Request Lifecycle
Understand how a Django request flows through middleware, URL routing, and views, and learn to write custom middleware for cross-cutting concerns.
·4 min read · #django#middleware#request
Django ORM Relationships: ForeignKey, OneToOne, and ManyToMany
Model real-world relationships in Django with ForeignKey, OneToOneField, and ManyToManyField, including reverse lookups, on_delete, and through tables.
·4 min read · #django#orm#models
Django Permissions and Authorization
Move beyond is_authenticated. Learn how to model groups, object-level permissions, and DRF permission classes cleanly.
·4 min read · #django#authorization#permissions
Django REST Framework Serializers Deep Dive
Understand how DRF serializers validate, transform, and persist data, and learn how to compose them for complex API payloads.
·4 min read · #django#drf#python
Django REST Framework vs FastAPI Compared
A practical comparison of DRF and FastAPI: performance, ORM, validation, async, and how to choose for a new Python service.
·6 min read · #django#fastapi#drf
Django Signals Explained
Learn how Django signals decouple side effects from your models, when to use them, and the common pitfalls that make signals hard to debug.
·4 min read · #django#signals#post_save
Django Templates: A Deep Dive
Master the Django template language: contexts, inheritance, includes, custom tags and filters, autoescaping, and performance tips for building maintainable server-rendered UIs.
·4 min read · #django#python#templates
The Django Admin: Free CRUD for Your Models
Use the Django admin to get a free CRUD interface for every model — createsuperuser, register models, customise list_display and search_fields, and add inline admins.
·8 min read · #django#beginners#admin
Install Django and Start Your First Project
A hands-on Django setup guide — virtual environments, pip install django, startproject, runserver, and creating your first app. Get to a working dev server in ten minutes.
·8 min read · #django#beginners#setup
Django Models and the ORM
A practical tour of Django's ORM — defining models, common field types, makemigrations and migrate, QuerySet filtering, foreign keys, and simple aggregations.
·8 min read · #django#intermediate#orm
Django Views, URLs, and Templates
Wire Django models to web pages — function-based views, render(), URL routing with path(), template tags like {% for %} and {% if %}, and template inheritance with {% extends %}.
·9 min read · #django#intermediate#views
What Is Django? Python's Batteries-Included Web Framework
A practical introduction to Django — its newsroom origins, the batteries it ships with (ORM, admin, auth, templates), and when to pick it over FastAPI or Flask.
·8 min read · #django#python#beginners