Blog

Thoughts on technology, development, and building things that matter.

2025-08-22

How Node.js Actually Works

Explore Node.js internals: V8, libuv, the event loop phases, thread pool, microtasks vs macrotasks, and practical patterns for performance and reliability.

2025-08-17

5 min read

HelloTalk – A Real-time Chat AppW

A full‑stack real‑time chat app with private/group chats, friend requests, notifications, attachments, and an admin dashboard. This post covers the architecture, MongoDB data modeling, Socket.IO events, security, and tradeoffs behind HelloTalk.

2025-08-13

4 min read

Designing a Scalable Queue System – System Design Principles

Deep dive into building a resilient, observable, and cost‑efficient queueing platform. Covers producers/consumers, backpressure, retries, DLQs, idempotency, ordering, and monitoring.

2025-08-09

3 min read

Redis – Beyond Just an In‑Memory Database

Practical patterns with Redis: caching, rate limits, streams, pub/sub, locks, and Lua. Tradeoffs, pitfalls, and production guidance.

2025-08-05

3 min read

SmartClass – AI‑Powered Roadmaps & YouTube Learning for Students

An AI assistant that converts goals into step‑by‑step roadmaps, curates YouTube lectures, and tracks learning progress. Covers architecture, retrieval, ranking, and UX decisions.