Intermediate - The Miners

Rails Multi-Databases and Tenancy: How You Can Do It Today
Exploring how to implement multi-databases and tenancy in Rails 8.1 with SQLite and ActiveRecord::Tenanted

by Miguel MarcondesSeptember 19, 2025September 19, 2025

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 …

How To Avoid Losing Your App State
The Memento Pattern

by João Victor VoglerJuly 3, 2025

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 …

Creating REST APIs with Ruby on Rails
Easy and fast developing with RoR and JBuilder!

by Ian LourençoJune 24, 2025July 7, 2025

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. …

How to Detect Forbidden Words in Text (Without Slowing Down)

by Gabriel QuaresmaMay 22, 2025June 2, 2025

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 …

Modern Approaches to Styling React Native Apps

by Jeferson BritoApril 3, 2025April 11, 2025

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 …

Ruby for the Curious: A Hands-On Guide to Getting Started
Ruby Basics to Pro Tips: Learn by Doing!

by Lucas GeronMarch 25, 2025May 27, 2025

If you’ve reached this post, you’re likely discovering and exploring the Ruby language, so, this article was made for you! The idea here is to …

Codeminer42 Hackathon: a lesson on experimentation

by Edy SilvaDecember 3, 2024December 3, 2024

On November 23rd, Codeminer42 organized its first Hackathon. The goal was quite simple: to encourage the experimentation of new technologies in problems that are a …

Ruby Enumerators: A Point of View You’ve Never Had
When and how to use custom Enumerators

by Edy SilvaSeptember 4, 2024September 4, 2024

The 80-20 rule is empirically observed in many human phenomena and activities and it is no different in programming. By understanding a portion of the …

Profiting with Elixir, Erlang and C
Getting distributed systems to 'Rinha de Backend'

by Edy SilvaMay 22, 2024May 22, 2024

On March 10th, the second edition of the “Rinha de Backend” (“Backend Fight”), a very fun hackathon, finished. I participated in this edition, and I …

Wrap and Roll: How to Create and Test an API Wrapper – Part II
Test Wrappers with VCR (and Webmock!)

by Ian LourençoApril 23, 2024April 24, 2024

Hello again! In case you fell here and have no context whatsoever, don’t worry! This is the final part of a two-part blog post, in …