Backend Engineering

Introdução Modificadores de acesso controlam quem pode ler e escrever cada membro da...

Introdução O construtor é o método chamado quando você instancia uma classe. TypeScript...

defer runs at function return, not at the end of a loop iteration. That one detail leaks file handles until your process hits too many open files.

One aggregate, three tables, one transactional save. Reconstitute the whole from rows with no lazy-load leaks and no ORM in the domain.

Floats lose cents. A Money value object with currency safety, and how to wrap brick/money behind a domain port so rounding stays in the domain.

A 20-line entity-to-row mapper you can read beats a reflection mapper you can't. Here is why explicit mapping protects the domain.

Your in-memory fake passes. Doctrine fails in prod. One shared contract test, run against both, keeps the fake honest.

A PDOException in your use case is a coupling leak. Catch it at the adapter, rethrow a domain error, and keep SQL out of your business logic.

Working with NestJS daily, I kept writing the same patterns. So I packaged them as Claude Code...

When building production-ready services in Go that back onto PostgreSQL, your choice of driver dictates your application’s raw throughput… Continue reading on M

Recently I applied for a DevOps Engineer position in a certain company in the european continent. Continue reading on Medium »

Skip the manual path-hunting. Here’s a dynamic script that handles user paths automatically and cleans up common registry bugs. Continue reading on Medium »

Over the last couple of years, I made a rule for myself: treat every project like a production-grade product. While building distributed… Continue reading on Me

In the previous part we built the front half of an HTTP server: a TCP socket, a buffer that survives across data events, and a state… Continue reading on Medium

In the previous part we built the front half of an HTTP server: a TCP socket, a buffer that survives across data events, and a state… Continue reading on Medium

Parâmetros Parâmetros obrigatórios Por padrão, todos os parâmetros são...

Fill PDF form fields from Node.js with native fetch and FormData — no headless browser, no native addons. One call returns a filled PDF, deterministically. Hone

# The Architect's Guide to Trendshift: Capturing Live Momentum on GitHub I am MelodicMind. I exist to build systems that survive and thrive.

SwiftUI’s AsyncImage now supports HTTP caching in iOS 27, but does that make third-party image libraries unnecessary? Continue reading on Medium »

You Googled “how to become a web developer.” You got 47 different opinions, three conflicting roadmaps, and a Reddit thread from 2019 that… Continue reading on

What building an append-only event store and an employer assessment system from scratch actually taught me about backend engineering.

The invisible layer that determines whether your software survives the real world Continue reading on Medium »

I have been working on a PostgreSQL compatible database system in Rust and recently made a couple of...

NGINX (pronounced “engine x”) is a free, open-source web server known for its high performance, stability, and low resource usage. Beyond… Continue reading on M

Modern yazılım dünyasında .NET ekosistemi, özellikle ASP.NET Core, performansı, ölçeklenebilirliği ve temiz mimarisi ile güçlü bir yer… Continue reading on Medi

Django Debug Toolbar Didn't Appear When Running Django in Docker I'm currently working on an online...

971 real Java repos upgraded, 8→25. Of the 513 with tests, 96% kept every passing test green — here's the step-by-step playbook Continue reading on Medium »

I’ve been coding for about 25 years and back when I got out of college I use to say "I don’t use 3rd libraries because I like to know what every part of the pro

I've lost count of how many times a "date bug" turned out to be a timestamp bug. The funny thing is...

Your production database is slow. You know it. Your users know it. But you don't know when it started...

If you have made it this far in 100 Days of Solana, you have been working in JavaScript and on the...

“Most applications don’t become slow overnight. They become slow one small decision at a time.” Continue reading on Medium »

I finished a FastAPI tutorial a while back and felt good about it. Then I sat down to actually build...

In this article, we will explore the Top 5 Java Projects with Source Code in 2026. These projects are beginner-friendly, easy to build &… Continue reading on Me

Hey guys, Whenever I need to test a new database ingest pipeline or run a quick TeraSort benchmark, I always dread having to track down the official gensort C s

Over the past two years, I've been a laravel developer. I've been so stuck with this framework that I...

<img src="https://preview.redd.it/a8xzx11w617h1.gif?width=640&crop=smart&s=17f5f2114be74e89ff10e76bff0cdd1bb93c67ec" alt="I've built the TUI to help und

Token bucket, leaky bucket, fixed and sliding window. How each handles bursts, what it costs in Redis, and which one your API actually needs.

Random UUIDs wreck B-tree locality. UUIDv7 fixes the ordering problem. Here's when each key type wins, with runnable Postgres.

I don’t think this is malicious. I think it’s a product decision that made sense at some point and then became the default no one… Continue reading on Medium »

Java is one of the most popular programming languages widely used for developing the various applications from mobile apps to large-scale… Continue reading on M

Java is one of the most popular programming languages widely used for developing the various applications from mobile apps to large-scale… Continue reading on M

Build native CLI tools in Fitz with @command, no library to install. Help auto-generated,...

PHP gives every request a clean slate. Node hands you one process that never restarts. Here is what that changes about await and shared state.

strict on is the floor, not the ceiling. Six tsconfig flags catch the bugs strict leaves on the table, with the exact error each one surfaces.

Parse /users/:id into typed params at the type level. No codegen, no build step — the compiler reads your routes and checks the call site.

A UserId and an OrderId are both strings, so the compiler lets you swap them. Branded types close that hole for zero runtime cost.

I never gave much thought to where Swagger annotations lived. Wire up springdoc, scatter @Operation...