Client API Key — Design (Lite) ออกแบบ API key service to service ให้เบาและยังถูกต้อง
ออกแบบ API key สำหรับการเรียกกัน service to service ให้เบาและยังถูกต้อง วันหนึ่งจะมีอีกทีมมาขอเรียก service ของคุณ และคุณต้องรู้ให้ได้ว่าใครเป็นคนยิ…
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Your Database Said "Success." Your Message Broker Said "Try Again."
This is where distributed systems get interesting. If you've worked with backend systems long enough, you've probably written code that looks roughl…
I built an interactive terminal portfolio you can run with: npx hello-nayeem
My Terminal Portfolio Run this in your terminal: npx hello-nayeem Features Arrow key navigation Real-time search Projects section Education section…
Defeating the Multi-Tenant SaaS Concurrency Trap in PostgreSQL
Most backend engineers implement multi-tenant quota checks using a standard "read-then-write" pattern. In production, this pattern is highly unsafe:…
A Small Refresh Bug That Uncovered Security Gaps in My OTP System
The Bug That Started It All It began as a small bug I found myself while testing: OTP verification kept failing whenever I refreshed the page, opene…
🚀 Backend Internals #4: exports vs module.exports — What's the Difference?
Most Node.js beginners think these are interchangeable: exports . sayHi = () => console . log ( " Hi " ); module . exports = () => console . l…
Real-time chatroom
I built a full-stack real-time chatroom application Live demo: https://realtime-chatrooms-frontend-703842083963.us-central1.run.app/ Github: https:/…
Shifting Left: How TDD Became the Foundation of SokoFlow's Core Engine
SokoFlow Build Log — Month 1 of 4 Last semester I set out on a new strategic plan to level up my software development skills through deliberate, pro…
Eventual Consistency Is Misunderstood by Most Engineers
I've interviewed dozens of engineers at the senior level. When I ask them to explain eventual consistency, most recite the textbook answer: "data wi…
Building a Production Grade Authentication System with NestJS
Building a Production Grade Authentication System with NestJS Security is not a feature you bolt on after the fact. It is an architectural decision…
Prisma vs Drizzle ORM: A Comprehensive Comparison
“Your ORM should fit your project, not just your taste.” A Practical Guide to Choosing Between Prisma and Drizzle ORM for Modern TypeScript Applicat…
Building a Clean and Maintainable API Layer in SaaS Platforms
A well‑designed API layer is the backbone of any SaaS platform. It defines how internal modules communicate, how external integrations work, and how…
Building devdevbuilds: where backend development meets design
Building devdevbuilds: combining backend projects, cybersecurity learning, and design assets I’m starting to use DEV Community as a place to documen…
AI-Powered Node.js: Why Node.js + AI Is Becoming a Powerful Combination
For the last few years, I've been working mostly with Node.js for building scalable APIs, backend services, and cloud-based applications. Recently,…
Library Oriented Architecture: The Most Interesting Architecture Pattern You've Probably Never Heard About
Hello! I'm Jairo Jr, your favorite Dev.to writter, or something like this 😄. Over the last few years, I've spent a lot of time studying software arc…
Mastering Node.js HTTP Module: Build Servers, REST APIs, and Handle Requests
Introduction to the HTTP Module Modern web applications rely heavily on communication between clients and servers. Whether you are building a REST A…
How the Internet Actually Works: Understanding Client-Server Architecture with Real Code
How the Internet Actually Works: Understanding Client-Server Architecture with Real Code The Big Picture: What Happens When You Visit a Website? Eve…
How to Build a REST API with Node.js and Express from Scratch
How to Build a REST API with Node.js and Express from Scratch Create a production‑ready RESTful API step‑by‑step using Node.js, Express, and modern…
How Data Access Breaks Down Under Load
Most database performance problems do not begin with obviously slow queries. In fact, many systems look perfectly fine early on. Queries execute qui…
From a For-Loop to a Fault-Tolerant Payout System (₹70L/month, 0 Duplicate Payments)
How we moved from a fragile loop-based payout system to a reliable, idempotent, and traceable architecture. Paying Money Is Easy. Paying It Correctl…