Bulk operations reduce database round-trips dramatically. I use bulk_create() for inserting many objects at once, bulk_update() for updates, and update() for queryset-level updates. These bypass save() methods and signals for speed. For large datasets

Django's i18n framework supports multiple languages. I mark strings for translation with gettext() or _(). The makemessages command extracts strings to .po files. Translators fill in translations, then compilemessages creates binary .mo files. I use {

Redis provides fast in-memory caching for Django. I configure it as cache backend and use for session storage. I cache expensive querysets, computed values, and API responses. The cache.get_or_set() method simplifies cache-aside pattern. For cache inv

Graphene brings GraphQL to Django. I define types mapping to models and create resolvers for queries and mutations. Clients request exactly the data they need, reducing over-fetching. I use DjangoObjectType for automatic schema generation from models.

Multi-tenancy allows multiple clients to share one application with isolated data. I use django-tenant-schemas for PostgreSQL schema-based isolation. Each tenant gets a separate schema (database namespace). The middleware routes requests to correct te

Custom actions extend viewsets beyond CRUD operations. I use @action decorator with detail=True/False for object-level or collection-level actions. This creates endpoints like /posts/1/publish/ or /posts/recent/. I specify HTTP methods, permissions, a

Django Silk profiles SQL queries, HTTP requests, and Python code. I install it in development to identify bottlenecks. It shows query counts, execution times, and duplicate queries per request. The web UI visualizes performance data. I use @silk_profi

Django Channels adds WebSocket support and async capabilities. I define consumers similar to views for handling connections. The channel layer enables communication between consumers. For real-time features like chat or notifications, Channels is esse

django-allauth provides ready-made social auth (Google, Facebook, GitHub, etc.). I configure providers in settings with API keys. It handles OAuth flows, token management, and account linking. Users can login with multiple providers. I customize templ

Nested routers create hierarchical URL structures for related resources. I use drf-nested-routers to define parent-child relationships in URLs like /posts/1/comments/. This makes APIs more RESTful and intuitive. I filter child resources by parent ID i

Proxy models create different Python behavior for the same database table. I set proxy = True in Meta. This adds methods or changes default ordering without new tables. Proxy models share the same table as the original. Use cases include different man

Custom template filters transform variables in templates. I decorate functions with @register.filter and optionally set is_safe=True for HTML output. Filters take one or two arguments. For formatting dates, numbers, or text, filters keep logic out of