Notes

12 Notes

Thoughts on backend engineering, system design, open source, performance, and software architecture.

Django Transactions: What atomic() Actually Protects

Learn how Django transactions work, what transaction.atomic() actually protects, and how to handle race conditions, row locking, database constraints, nested transactions, and post-commit side effects with select_for_update() and on_commit().

Django

Python

Backend

14 min read

Sep 13, 2026

The Hidden Cost of Django REST Framework Serializers

Learn how Django REST Framework serializers can cause N+1 queries, slow API responses, and unnecessary database work—and how to optimize them with select_related, prefetch_related, annotations, and better serializer design.

Django

Backend

Python

7 min read

Sep 7, 2026

Building a Django Package — Part 4: Publishing django-healthkit to PyPI

In this final part, we prepare django-healthkit for release, build and validate the package, test it on TestPyPI, publish it to PyPI, and create a Git tag and GitHub release.

Packages

Django

OpenSource

Python

8 min read

Aug 26, 2026

Building a Django Package — Part 3: Health Check Manager and Endpoint

In Part 3, we connect the database and cache health checks, build the health check manager, expose a Django health endpoint, measure check latency, and return a structured health status.

Packages

Django

OpenSource

Python

7 min read

Aug 23, 2026

Building a Django Package — Part 2: Database and Cache Health Checks

In this part, we implement the first health checks for django-healthkit, covering database connectivity and Django cache functionality with simple, independent, and testable checks.

Packages

Django

OpenSource

Python

6 min read

Aug 20, 2026

Building a Django Package — Part 1: Setting Up django-healthkit

In this part, we build the initial structure of django-healthkit, configure the package with pyproject.toml, and prepare it for development.

Packages

Django

OpenSource

Python

4 min read

Aug 14, 2026

Building a Secure Webhook Receiver for Server-to-Server Communication

How I built a secure FastAPI webhook receiver using RSA signatures to enable authenticated server-to-server communication, proxy requests, and connect applications across different network environments.

FastApi

OpenSource

Security

Python

7 min read

Aug 11, 2026

Why I Switched to Conventional Git Commit Messages

Why I switched from inconsistent Git commit messages to a Conventional Commits style, with practical examples for cleaner and more maintainable Git history.

Git

Tip

3 min read

Aug 9, 2026

Building django-healthkit

How a simple health endpoint for Bidar turned into django-healthkit, a lightweight Django health-check package.

Packages

Django

Backend

DevOps

2 min read

Aug 9, 2026

Designing a Gold Jewelry E-Commerce Database with Django

Learn how to design a scalable Django database for a gold jewelry e-commerce platform by modeling products, attributes, and purchasable product variants using real-world domain-driven design principles.

Django

Backend

Architecture

5 min read

Aug 4, 2026

How to Fix Common Next.js 16 Build Errors (Proxy, Dynamic Rendering & Revalidation)

Learn how to fix common Next.js 16 build errors, understand Proxy, Dynamic Rendering, and Revalidation, and improve your application's SEO and performance.

Frontend

Next.js

Tip

2 min read

Aug 2, 2026

Why I Built cyber-ui: A Minimal Design System for Developers

How my projects, from backend systems to monitoring tools, led me to create a minimal and personal UI foundation.

Frontend

Packages

3 min read

Jul 31, 2026