Codeminer42's Engineering Blog
Intermediate

Rails Multi-Databases and Tenancy: How You Can Do It Today
Portuguese version here: https://tech-pills.github.io/2025-09-18-Rails-Multi-Databases-e-Tenancy-como-fazemos-isso-em-2025/ Hey everyone! Hope you're doing well. So, you're building an application and you've reached that moment when you think: "Damn, how do I keep Company Two…
How To Avoid Losing Your App State
Memento mori. There are only two guaranteed things in life: one, we both are going to die. And while I'd prefer you go first... and it's nothing personal - I…
Creating REST APIs with Ruby on Rails
Introduction You've likely seen this old and famous demo presentation on how powerful and easy it is to build an app with Ruby on Rails. As the demo shows, it…
How to Detect Forbidden Words in Text (Without Slowing Down)
During our workday or free time, we use apps and tools that heavily rely on data structures like trees (binary, red-black, AVL, etc.). Whether we're using a text corrector to…
Modern Approaches to Styling React Native Apps
React Native is a known framework for building mobile applications with React. In its workspace you will find some similarities with web development, such as styling. In RN apps, we…