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Engineering Notes.

Practical topics from real backend development, integrations, transaction systems and deployment work.

Engineering / notes

What I write about.

Practical engineering notes from backend systems, API integrations, transaction safety and deployment work.

LARAVEL / TRANSACTIONS

Building safer wallet debit flows

Topics: MySQL transactions, row-level locking, duplicate debit prevention, reversals and ledger consistency.

API INTEGRATION

How I structure provider API wrappers

Topics: authentication, normalized payloads, logging, retries, callbacks, status queries and provider-specific mapping.

FINTECH / WEBHOOKS

Debugging callbacks in production

Topics: request IDs, raw payload logging, idempotency, HTTP status handling and reconciliation workflows.

DEVOPS / LARAVEL

Laravel deployment checklist for Ubuntu VPS

Topics: Nginx, PHP-FPM, Composer, permissions, environment variables, SSL, DNS and cache optimization.

FASTAPI / PYTHON

Where FastAPI fits in API-first systems

Topics: lightweight services, request validation, async patterns, API documentation and integration architecture.

TRAVEL TECH

Understanding flight booking API flows

Topics: search, fare quote, SSR, booking, ticketing, PNR, cancellations, markup and booking ledgers.

STATUS

The blog page is live-ready. Individual article pages can be added next as you publish technical write-ups.