Backend Engineering

And the browser CORS quirk that makes it possible Continue reading on Medium »

🎯 Learning Objectives Understand the interface boundary between Terminal Emulators and...

Software engineering is not just about writing code. It is about designing systems that solve real...

Node.js isn't just "JavaScript on the server." It's a paradigm shift in how we handle I/O. Thirty years in tech taught me to recognize when something genuinely

Node.js no es solo 'JavaScript en el servidor'. Es un cambio de paradigma en cómo manejamos I/O. 30 años de historia con la tecnología me enseñaron a reconocer

Explore npm v12's breaking changes, security updates, migration tips, and best practices for secure Node.js development. Continue reading on Medium »

A teammate asked me a question recently: how do you format your work in a way that makes it more readable? It caught me off guard because… Continue reading on M

If you've ever shipped a side project with PocketBase, you know the feeling: the backend itself takes...

Webhooks, scraping, health checks, proxying. Every language solves outbound HTTP with an external...

Webhooks, scraping, health checks, proxying. Cada lenguaje resuelve HTTP client outbound con una...

Every day, developers paste sensitive data into online tools. API responses, JWT tokens, database...

In this article, we’ll understand some of the most important NestJS concepts using simple language and practical examples instead of… Continue reading on Medium

Stack traces look intimidating at first, but they are often the fastest path to finding the real problem. Learn how to read them with… Continue reading on Mediu

TL;DR: To write your first unit test in Node.js with Jest, install Jest with npm install --save-dev...

In routine software development, converting Word documents to plain text is a frequently encountered...

If you’re building APIs, web apps, or mobile apps, you’re probably staring at JSON every single...

In the modern landscape of backend development, performance is not just a metric — Gin , Echo, and Fiber, which one faster?! Continue reading on Medium »

As your Laravel application grows, you’ll often find yourself writing multiple actions inside a single controller. Continue reading on Medium »

I built Kutta, a small 2D wind tunnel for aeromodelers, game developers, and anyone who enjoys...

There's a new HTTP method called QUERY. It's safe like GET (doesn't change data) but can carry a body...

I have 13 years of Java experience. I have also interviewed hundreds of developers at MNCs. Two...

<img src="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.us-east-2.amazon

🚨 How to Handle Unhandled Exceptions & Unhandled Promise Rejections in JavaScript and...

Whether you're writing your first line of code, learning DevOps, cybersecurity, cloud, data, or...

A few years ago, I was obsessed with reduce(). Every problem looked like a reduction problem. Need...

Why this series I love writing clean architecture . Not because it looks nice in a...

PocketBase is an open-source backend written in Go that bundles a real-time SQLite database,...

One of the biggest misconceptions about Node.js is: Continue reading on Medium »

Build an authentication flow (sign up, sign in, protected routes, and email verification) with a Limen server in Go and the limen-auth TypeScript client in Reac

Request lifecycle: một HTTP request đi qua đâu, và vì sao "quên gọi next()" làm request treo...

Python vs JavaScript for Backend Automation in 2026: The Ultimate Developer’s Guide It is...

If you’ve ever pasted @Component into an Angular class, written a @Get('/users') in a NestJS controller, or wondered why your TypeScript… Continue reading on Me

They never check anything at runtime. That is not a bug. It is the whole design. Continue reading on Medium »

Basically, there are two types of threading that we study: Continue reading on Medium »

TL;DR. An uptime prober is a strange HTTP client, so I swapped reqwest for raw hyper. It needs the...

GET can’t carry a body. POST removes safety and caching. RFC 10008 addresses this issue. Continue reading on Medium »

Llevo años manteniendo plataformas para negocios familiares con un stack sin frameworks pesados:...

rust struct Particle { mass: f64, } fn main() { // A particle is created in the universe...

Metade do pedido salvou, a outra não? Aprenda a usar transactions no Laravel pra garantir consistência: ou salva tudo, ou não salva nada.

Understanding What Actually Happens During a WebSocket Connection If you've ever used...

If you've worked with APIs, configuration files, or frontend applications, you've almost certainly...

Rate limiting is not a dependency you drop into middleware and call it done. It's an abuse policy. Before you copy that snippet, you need to define what asset y

I am starting web dev is php necessary like should I learn it or is it optional? I have seen few people say php is foundation of many web sites at the same time

The Netflix analogy makes npm and npx easy to remember. Looking under the hood makes them genuinely useful. Continue reading on Medium »

If you’re beginning your programming journey, one of the first technologies you’ll encounter is JSON (JavaScript Object Notation). It has… Continue reading on M

Modern websites are no longer just static HTML documents. Many of them behave more like applications. Part of the content appears only… Continue reading on Medi

Hi, folks! I love programming very much. It's a lot of fun for me, but unfortunately, I'm unable to pursue a CS degree due to various reasons. Still, I love pro

What is the "this" Keyword? The "this" keyword is a reference variable that refers to the current...