Writing

Essays, post-mortems, and small notes on software engineering.

Series · 8 parts ভিডিও মাস্টারি Eight parts on how video actually works: codecs, transcoding, packaging, delivery, and the player. Series · 17 parts রিমোট জব প্রিপারেশন A complete guide to landing a senior remote role from Bangladesh, aimed first at the Gulf, Turkey and Europe, with the US as a later step: positioning, outreach, the interview loop, the contract, and the first 90 days. Series · 14 parts ফ্রিল্যান্সিং: জিরো থেকে প্রো A complete guide to Fiverr and Upwork from zero: how the marketplaces actually rank you, gigs and proposals that convert, the first order, and the climb to Level 2 and Top Rated.

CDN with OpenResty & Gcore

Every layer explained — from BGP routing to Lua hooks, cache headers to origin auth — and how to extend each one.

Hardening Your Node.js Supply Chain: A Practical Playbook

Migrating package managers, enabling supply-chain guards, and building a security baseline that survives real-world threats.

Full-Stack VPS Deployment: React, Node, Go, Postgres, Redis, ClickHouse, Redpanda & More

A complete guide to deploying a production-ready full-stack application on a fresh VPS — covering server hardening, message streaming, object storage, search, email, task queues, and observability.

A primer on durable execution

What durable execution actually buys you, when it's worth the complexity, and the two failure modes nobody warns you about.

The boring stack ships

An argument for picking the dullest technology that solves your problem — and a working definition of 'dull'.

Welcome — and what this place is for

An intro to this site: why it exists, what I'll write here, and what I won't.