Fixing Gem Install Errors on M3 Mac with Ruby 2.7

Resolving some gem installation issues on modern Macs when setting up a legacy Rails project.

Overriding methods in Ruby on Rails - a no-code editing approach

Discover how to override a class or instance method without editing its source file in Ruby on Rails.

Speeding up Ruby by rewriting C... in Ruby

I dive deep into a recent programming benchmark from a Ruby perspective - and I dig into the how and why of different performance characteristics and how YJIT is applied to Ruby code, vm bytecode, and machine code. [more inside]

New updates to Everyday Rails Testing with RSpec

Hi Ruby friends, I’ve added a new chapter on request specs to Everyday Rails Testing with RSpec! Head to Leanpub to get your update now or purchase a copy of the book. Next up is a fresh take on system specs, now in progress. Thanks!

Implementing new EU invoice format (which is required for B2B from 2025)

From 2025, all B2B invoices within European Union must be machine readable by complying to a XML-spec (Factur-X). In this post, I use secretariat Gem for generating + validating the XML and then use plain Ghostscript to put it together with the original invoice.pdf into a hybrid so-called ZUGFeRD file that complies with the spec but still displays as a normal PDF(/A3). [more inside]

What you need to know about SQLite

Lessons about what the SQLite database engine can and cannot do, how Ruby on Rails helps you work with SQLite, and why it may, or may not, be a good choice to back your Rails 8 app. [more inside]

Kamal Database Backups

In this episode, we look at some precautions we can take with our production environment and setup recurring backups for the database.

Mastering Concerns in Ruby on Rails

Deep dive into Concerns in Ruby on Rails, exploring its role in modular code, comparison with Mixins, security, testing, and its use in Rails 6 and 8. Read it here - Mastering Concerns in Ruby on Rails.

Ruby Triathlon 2025

With all the 2025 dates confirmed for the Ruby Conferences that were part of the Ruby Triathlon in 2023 and 2024, we’re happy to launch a website for the initiative! [more inside]

Rails is better low code than low code

Thoughts on Rails and low code platforms: Rails is better low code than low code [more inside]

Nobuild with Rails and Importmap

Learn how to use Importmap in Ruby on Rails to manage JavaScript dependencies without bundling. Covers web standards, Rails integration, how to use it with Engines, and suggested practices. [more inside]

Shrinking a Postgres Table

The Ultimate Rails Version Migration Checklist for 2025

Ready to migrate your Rails application to version 8 in 2025? This detailed checklist covers everything. Read it here - The Ultimate Rails Version Migration Checklist for 2025.

Code Exercises & Slides for RubyConf 2024 Workshop: "How To Build Basic Desktop Appli

Code Exercises & Slides for RubyConf 2024 Workshop: “How To Build Basic Desktop Applications in Ruby”. Everyone can go through them at their own time.

Calculating the largest known prime in Ruby

My short journey trying out the new ability to calculate the largest known prime number in Ruby master, and what tweak was needed to have it finish calculating - preferably before the heat death of the universe. [more inside]

Server-sent Events and WebSockets in Rack for Ruby

In the final part of our three-part series, we’ll use server-sent events (SSEs) and WebSockets to establish a persistent connection in a Rack app:

A small pulsating animation

As a backend developer I get excited when I can do a small UI tweak like Adding a pulsating effect on a menu item and of course I then created a Phlex component for that menu item

Rails 8 Upgrade Guide 2025: Step-by-Step Instructions for a Smooth Transition

There must be 1000s of Ruby on Rails apps still running on version 5, 6, 6.1, 7, 7.1, etc. Upgrading your Rails 5 app to version 8 is a herculean task. My latest article on how to upgrade your non-8-version Ruby on Rails application to version 8 provides a detailed guide you can follow to make this process less herculean. Read it here - Rails 8 Upgrade Guide 2025: Step-by-Step Instructions for a Smooth Transition.

Using non-root users on Kamal servers

Here’s a short post on using non-root users to connect to servers managed by Kamal.

Server monitoring (CPU, memory, storage) with rails_performance gem

. With every new release getting closer to the NewRelic/Datadog free and self-hosted alternative :) Now you can monitor your server CPU load, memory, and storage with the latest gem release. [more inside]

How I built Rails docs for Terminalwire.com using Sitepress.cc

Finally recorded a presentation about Sitepress at https://youtu.be/K2N8fp2P7Ms where I cover my motivations for building Sitepress eight years ago and show how I created the Rails docs for Terminalwire at https://terminalwire.com/docs/rails with Markdown templates, Fromtmatter, and page models. [more inside]

Ultimate Rails Security Guide: Best Practices for Ruby on Rails Applications in 2025

Both web applications and mobile applications industries are at the peak of their life. Whatever softwares, ERPs, CRMs, Code Repos, etc., we use today are in majority either a SaaS or Self-hosted web app. Rails 8 with Strada can now be used to build both web and mobile apps thus security has to be the prime concern in your MVPs built using Rails8 and onwards. This article lists the advanced techniques and built-in features on how to secure your Ruby on Rails applications in 2025 and beyond. Read it here - Ultimate Rails Security Guide: Best Practices for Ruby on Rails Applications in 2025.

Database Schema Ownership

Check out a new database ownership tool. It is neat for big teams. More details in the article.

10 Costly Ruby on Rails Upgrade Mistakes to Avoid in 2025

Discover the top 10 Ruby on Rails upgrade mistakes that can cost companies over $100K. Learn how to avoid these pitfalls and ensure smooth transitions. Read it here - 10 Costly Ruby on Rails Upgrade Mistakes to Avoid in 2025.

Rack for Ruby: Socket Hijacking

Rack is the foundation for every popular Ruby web framework in existence. In part two of this three-part series, we’ll run through socket hijacking: