Django
A shop ledger page, 1899. Every line adds up.
How to Integrate OpenAI into a Django or FastAPI Backend
Integrate a model API through a server-side service layer with timeouts, input limits, structured outputs, and cost monitoring.
2 min read
How to Migrate a Django App to Google Cloud Run
Move Django to Cloud Run by containerizing the app, externalizing state, configuring identity and database access, and planning migrations.
2 min read
How to Deploy Django on Azure for Production
Deploy Django on Azure with explicit settings, managed database connectivity, static files, health checks, and a repeatable release process.
2 min read
How to Modernize a Legacy Django and React Application
Modernize a Django and React application incrementally by mapping dependencies, adding tests, and improving the riskiest seams first.
2 min read
How to Fix CORS Errors Between React and Django
Diagnose CORS failures by checking origins, preflight requests, credentials, and CSRF configuration instead of disabling browser security.
2 min read
A Practical Observability Checklist for Python APIs in Production
Instrument a Python API with structured logs, metrics, traces, request correlation, and actionable alerts to diagnose production problems without logging sensitive data.
4 min read
How to Run Database Migrations Safely in a Production SaaS Application
Plan safer production database migrations with backward-compatible schema changes, staged rollouts, lock awareness, data backfills, and rollback planning.
4 min read
How to Implement API Rate Limiting for a SaaS Application
Choose rate-limit identities, algorithms, response headers, and distributed storage for APIs while avoiding limits that can be bypassed or unfairly shared.
4 min read
How to Add Redis Caching to an API Without Serving Stale Data Forever
Choose cache keys, TTLs, invalidation rules, and stampede protection for API responses while accounting for stale data and cache failures.
4 min read
How to Implement Tenant Isolation in a Multi-Tenant SaaS API
Design tenant-aware API authorization so users can access only the organizations and records they are permitted to see, with database constraints and tests for cross-tenant access.
4 min read
How to Make Celery Background Jobs Reliable in Django
Design more reliable Celery tasks with idempotency, bounded retries, timeouts, queue separation, monitoring, and explicit handling for failed jobs.
4 min read
How to Find and Fix Slow Django API Endpoints
Diagnose slow Django REST API endpoints by measuring query time, identifying N+1 queries, improving pagination, and checking database indexes before changing infrastructure.
4 min read
Django to FastAPI: Moving a Team Without Chaos
A pragmatic plan for moving a Django team to FastAPI: when not to migrate, project structure, ORM and Alembic choices, background jobs, and incremental rollout.
4 min read
Choosing Hosting for a React + Django + PostgreSQL App: A Cost and Effort Framework
Compare a VPS with Docker Compose, a PaaS and managed containers for a React, Django and PostgreSQL app using criteria beyond the monthly price.
5 min read
Celery Scales Workers but Exhausts the Database Connection Pool
More Celery workers means more PostgreSQL connections. Do the concurrency math, set CONN_MAX_AGE sensibly, and use pgbouncer to avoid too many clients errors.
5 min read
Run Django Migrations Exactly Once in a Multi-Server Deploy
Running migrate on every server at startup causes races and half-applied deploys. Run it once in a release step and keep migrations backward compatible.
5 min read
Celery Serialization Pitfalls and How task_always_eager Hides Bugs in CI
Tests pass with eager Celery but tasks fail in production on serialization. Learn why, pass IDs instead of objects, and test closer to real behavior.
4 min read
Deploying New Code While Old Celery Tasks Are Still Queued
After a deploy, queued Celery messages built for the old signature hit new code and fail. Learn how to change task arguments and names safely.
4 min read
Deploy Celery Worker, Beat and Flower With Docker Compose Using One Image
Run the Django web app, Celery worker, beat and Flower from a single Docker image with different commands, avoiding four Dockerfiles that drift apart.
4 min read
Celery vs Cron vs a Django Management Command: Pick the Simplest Tool
Not every scheduled or slow job needs Celery. Use clear decision criteria to choose between cron, a Django management command, and a task queue.
5 min read