Backend Engineering

Olá, comunidade DEV! 👋 Recentemente, compartilhei como reescrevi completamente o motor do Classic...

I built a real time notification microservice with NestJS, Redis, PostgreSQL, and Docker. When you...

Building a Production Grade Authentication System with NestJS Security is not a feature you bolt on...

Everything a beginner needs to go from blank laptop to writing and sharing real code — in one afternoon. Continue reading on Medium »

If you’re still shipping bad software to other people, that’s now a choice — not a constraint. Continue reading on Medium »

A surprising number of production incidents are not caused by complex bugs. They are caused by missing configuration. Continue reading on Medium »

When I first learned JavaScript, I thought sort() was one of the easiest array methods. Continue reading on Medium »

Not a todo app. Not a weather widget. An actual production-style alerting system I use every day. Continue reading on Medium »

A fast, straightforward guide to installing Git on Windows, configuring the setup wizard and verifying your installation via Command Prompt (CMD).

Small habits. Massive impact. These everyday Java mistakes cost you readability, performance, and bugs you’ll spend hours tracking down. Continue reading on Sta

I woke up to an email from Stripe that made my stomach drop. Continue reading on Medium »

I woke up to an email from Stripe that made my stomach drop. Continue reading on Medium »

The renaissance of desktop applications has arrived, yet this transformation is marked by profound architectural trade-offs. The Electron… Continue reading on M

Today I shared with you a practical story of how switching from readable JSON to compact binary serialization helped us reduce overhead… Continue reading on Med

I ignored UV for months, I Was Wrong. After switching from pip, I realized the real benefit had nothing to do with speed. Continue reading on Medium »

I ignored UV for months, I Was Wrong. After switching from pip, I realized the real benefit had nothing to do with speed. Continue reading on Medium »

Choosing the right technology stack is one of the first important technical decisions a startup makes. Continue reading on Medium »

While I was reading PPP by Bjarne Stroustrup, a C++ programming book basically, and in the second chapter the book mentions something about the declaration oper

Modern APIs need authentication that is both secure and convenient. Users should not have to log in again every few minutes, but a stolen… Continue reading on M

Moving off a managed platform to host your Next.js app on a VPS: standalone Docker image, private registry, reverse proxy with automatic SSL and a homemade depl

[Java] I have a parent folder names "Testing" which have src and res folders in it, src have my code. I used to write in Eclipse and FileWriter writer = new Fil

Yesterday’s project introduced command-line arguments so users could extract text from a specific page in a PDF. Continue reading on Medium »

Your Go infinite loops might be silently killing your service. Here is how to fix them properly. Continue reading on Medium »

5 PHP Features You're Probably Not Using (But Should) These aren't obscure tricks. They're...

TLDR any is a special TypeScript type that turns off all type checking for a variable. It...

Disclaimer — if you are a HR from my company, I am not actually stealing anything. All dev tools here are open source. Continue reading on Level Up Coding »

Ensuring that VAT numbers are accurate is integral for businesses in e-commerce and fintech sectors....

After learning HTTP, REST APIs, controllers, services, repositories, and databases, I reached a concept that quietly powers almost every… Continue reading on Me

I’ve always been fascinated by PDFs. They look simple on the surface. Just a document you can open...

A no-fluff walkthrough of building a fully functional CRUD REST API using FastAPI and Pydantic — with automatic Swagger docs, request validation, and zero boile

When the DB is fast but the API is still slow, the bottleneck is Ruby itself: bloated serialization, object allocation / GC pressure, and recomputation. Plus th

As an Odoo developer, I was tired of writing the same boilerplate code every single day. Every time...

If you’ve ever written the same LIST / GET / POST / PATCH / DELETE boilerplate five times in one sprint, you already know the pain. This… Continue reading on Me

If you’ve ever written the same LIST / GET / POST / PATCH / DELETE boilerplate five times in one sprint, you already know the pain. This… Continue reading on Me

The full story of modernizing a decade-old SaaS asset pipeline — without breaking production Continue reading on Medium »

For a long time, I thought becoming a better Python developer meant learning more. Continue reading on Medium »

If you have ever built a Java application that converts Markdown to HTML—whether for a blog engine, a...

The problem is not that the code fails today. The problem is that it becomes harder to trust tomorrow. Continue reading on Skill Stuff »

Environment variables look simple until one of them is missing, empty, malformed, or interpreted in a...

If you run a HighLevel integration — an n8n flow, a custom CRM bridge, a Make scenario, an internal...

It started with a failed ambulance call at 2 AM and turned into a question I couldn't shake: why does...

If you've ever tried to send an iMessage programmatically, you've probably hit the same wall everyone...

One day a user reported an oddly asymmetric bug. In the "add new site" modal, picking an SSH profile...

A few weeks back I shared some early Zen code examples. Since then, a lot has changed. We're now at...

A minimal, in-process event bus for Go — typed events, cancelable listeners, and one-shot handlers,...

Nyra – Memory safety of Rust with the simplicity of JS Hi, I built Nyra because I love the memory...

A deep dive into Go concurrency, expirable LRU caches, and resource lifecycle cleanup when embedding long-running security engines.

I'm working on a repository for scripts that interact with the OS, and I began by doing a simple function to get the drivers—one for Windows and another for mac