Backend Engineering

Ubuntu's default APT repository ships an outdated Node.js build that is not suitable for modern...

1. Introduction If you've worked with legacy backends, you'll agree: when they fail, it's...

Metric Value Firebase cost increase at scale 300-500% per year User threshold for...

Chasing speed when learning to code is the fastest way to hit a wall. We're often told to "learn...

Most Developers Meet reduce() at the Wrong Time Usually, it happens through some...

Node.js is amazing for shipping fast. It's also amazing at letting you ship broken things fast. I've...

Event loop mastery, streams, worker threads, graceful shutdown, and the design patterns that separate...

📁 Full Source Code: midnight-apps/unshielded-token Target audience: Developers ...

The Problem: apt-key is Deprecated and Repository is Unsigned When trying to install...

Every Go web framework comparison post says the same thing: "Gin is the most popular, Fiber is the...

A while ago — though by current standards that already feels like ancient history — Twitter was loud...

I’m a .NET developer. I can build production-ready applications, APIs, and work with databases. In...

You've definitely come across this debate more than once: type or interface? Most answers online boil...

Hi everyone — I'm a backend engineer with 3+ years building and shipping production backend systems,...

In this blog we are going to learn basic fundamentals of programming. We are exploring variables and...

TL;DR Zod's .refine() executes on every input — even when earlier validators like .min()...

How I handle saving and loading typed config-like data in a small Rust app without turning it into a big abstraction.

The real logging and timestamp macros I use in a small Rust bot, and why I still like this kind of tiny local utility.

I’ve just started a 40-day journey to learn Go (Golang). This is a record of what I learn in each...

PHP 8.5 shipped a pipe operator, from Larry Garfield's RFC (approved 33-7). The marketing examples...

My smartwatch told me I burned 3,400 calories yesterday. My partner's app told me I burned 2,200....

All languages have, so far, reached a certain point in their development: error handling. JavaScript,...

If you’ve worked with Firestore long enough, you’ve definitely seen this: “The query requires an...

This blog was originally published on Descope. Looking to implement authentication middleware in...

A payment webhook fires once. You miss it. The customer thinks they paid. Your dashboard says they...

Understanding the control flow of a program is very important to understand the behaviour of code....

Supabase Auth Advanced — Custom Claims, Row Level Security, and Session Management Once...

The JavaScript global object and scope are a key part of building apps with JavaScript....

Supabase PostgreSQL Functions — Move Complex Logic Server-Side with RPC Writing complex...

A few weeks ago I was debugging a POST /login endpoint that was occasionally taking 800ms...

Hello, I’m starting a new project to improve my backend development skills using Laravel. The goal...

TL;DR I open-sourced mini-xlsx, a one-function, zero-dependency XLSX builder for the...

There are some developer tools that are not complicated at all, but still manage to interrupt your...

Most tutorials on client-side data storage reach for IndexedDB, localStorage, or a third-party sync...

Team Members @manaswini_k_f89ce497b2a92 @chandan_rohith @phani_jayanth @puneeth-0307 ...

The Problem with "Tutorial Code" Most tutorials teach you how to make things work. They don't teach...

If you've ever built a web API, you've probably asked yourself: "How do I make sure only the right...

If you find this helpful, please like, bookmark, and follow. To keep learning along, follow this...

If you find this helpful, please like, bookmark, and follow. To keep learning along, follow this...

Why Your Supabase Data Is Exposed (And You Don’t Know It) The four RLS mistakes that silently leak...

Introduction Building a complete registration system usually means setting up a backend, managing...

A production walkthrough of the auth pattern powering CoinHawk's admin layer — and why "the client...

While building iTicket.AZ — a real-time event ticketing platform — I came across a job posting from a...

BACKEND ARCHITECTURE MASTERY Day 6: Machines, Valet Keys, and the Death of OAuth 1.0 15...

In Part 7, I taught my server how to die gracefully. It felt production-ready. Auth, rate limiting,...

All tests run on an 8-year-old MacBook Air. When I started building a PDF tool in Rust, the first...

Web development has evolved rapidly over the last decade. As websites and applications became more...

My API started the week serving 200 req/s. By Thursday it was getting hammered with 2,000. No...