Backend

Cybersecurity architecture for Django REST Framework with Redis rate limiting and JWT rotation

Hardening Django REST Framework for Production: Redis Throttling, JWT Rotation & OWASP Defense

A practical guide to securing Django REST Framework in production: Redis sliding-window throttling across Gunicorn workers, JWT token rotation, and OWASP headers.

Academic GPA and CGPA analytics architecture and database schema in Django

Designing an Academic GPA/CGPA Calculation Engine in Django: Architecture, Edge Cases & Math

A battle-tested engineering breakdown of building an academic CGPA calculator in Django, covering floating-point rounding hazards, retake/back-paper replacement logic, and dynamic formsets.

High-tech 3D isometric architecture of a digital payment gateway orchestrator with FastAPI

Building an Idempotent Payment Orchestrator with FastAPI: Surviving Double-Charges and Dropped Webhooks

A battle-tested guide to architecting a resilient payment orchestrator in FastAPI, handling double-spend race conditions, idempotency keys, and timing-safe webhook verification.

eSewa Intent API v2 production integration in Django REST Framework

Integrating eSewa Intent API v2 in a Django Backend

A complete production engineering guide to integrating eSewa Intent API v2 in Django, covering HMAC-SHA256 signatures, silent callback failures, and verification.