In this article, I distill the key concepts from Doerr's book, focusing on how OKRs and CFRs empower teams to deliver exceptional results.

Learn how I built OpenTask, an open-source MVP task management web app, using the new Next.js App Router, React Server Components, Server Actions, Suspense, Tailwind CSS, Radix, Supabase, and Prisma.

Tired of starting new Next.js apps with a spaghetti codebase? Nexar is here to help! It's a modular and layered architecture to build scalable, maintainable, and well-organized Nextjs App Router codebases. Say goodbye to spaghetti code!

Learn what software architecture is, why it's important, and how components, modules, and layers help you modularize your applications.

Learn why React Server Components and the new Next.js App Router unlock a new hybrid web application model, why it makes sense, and how to use it.

Learn how to set up HTTPS on a Linux server using a wildcard certificate from Let's Encrypt and set up the Nginx website configuration files accordingly.

Learn what HTTPS and TLS are, what certification authorities (CAs) are, what Let's Encrypt is, and the difference between regular and wildcard certificates.

Learn how to install Homebrew, Git, Node.js, Oh My Zsh, generate SSH keys, and more.

Learn how to install and run multiple Node.js versions effortlessly using nvm.

Learn how to sign Git commits using SSH keys, how to set up Git to remember your passphrase, and how to verify your commits locally and on GitHub.

Learn how to generate SSH keys, why you should use passphrases, how to use your SSH keys on GitHub, and more.

Antigen and Oh My Zsh are a great combination that allows you to customize Zsh to your liking easily. Learn how to install both in six easy steps.

Learn how to install Git with Homebrew in six easy steps.

Learn how to install Homebrew in four easy steps.

Learn how to install the Command Line Developer Tools in four easy steps.

Do you know what are remote and tracking branches? Tracking ones can make our lives easier, get to know why and how.

Learn how to password-protect files and directories on Linux + Nginx in 4 steps using HTTP Authentication.

In this short entry I'll talk about something you may not know: it's not possible to release bug-free software! Get to know why, and how to proceed with your testing activities in the real world.

Learn what Git tagging is and how to use it to tag your software releases.

Learn how to set up a website or web app using the ultra-fast Nginx HTTP Server on Linux in 6 steps.

Learn how to install Nginx on Debian or Ubuntu in 5 steps.

Learn the difference between Software Testing and Quality Assurance (QA).

Learn what Git branching is, why use it, and how to create and merge branches, including conflict resolution.

Learn how to securely set up a Debian or Ubuntu VPS (Virtual Private Server) from scratch in 11 steps.

Learn what NoSQL is, why it is different, its four main data models (key-value, document, column-family, and graph), when we should use it, and more.

Learn how to report bugs effectively proving a clear description, reproducible steps, sorting by severity and priority, and more.

Learn some basic Gits commands: clone, init, status, commit, push, pull, remote, and more.

Get a comprehensive introduction to what Node.js is, why it's different, when we should use it, what evented I/O means, and more.

Get an introduction to what UML is, what are models, requirements, use cases, and more.

What is software testing? What are black-box and white-box testing? What are unit, integration, and end-to-end testing? Get these and more questions answered.

Learn about Git's three file states (modified, staged and committed), and its three corresponding sections (working directory, staging area and Git directory).

Sometimes tricky issues arise in software development, but not all are bugs. In this article you'll learn solid parameters to make sure something really is a bug.

Learn what a product specification (spec) is, why it's so important, and know some types of documents that may compose it.

This article explains what Git is, a little about how it works internally, what a DVCS (Distributed Version Control System) is, its advantages, and more.

Welcome to my blog. I'll be writing mostly about Ruby, Rails, HTML5, JavaScript, iOS, Android, Web Server, etc. Feel free to cooperate, share ideias and checkout the public repository.