🔖 Bookmarks

Shipping new features on legacy Rails applications requires deep codebase context. The rails-mcp-server gem closes the gap between AI agents and your Rails projects, enabling more relevant code analysis and context aware refactoring suggestions. Whether you're dealing with tech debt in a brownfield application or building new greenfield features, this tool can help you move faster with confidence.

Should a Ruby class do just one thing? Explore the Single Responsibility Principle, cohesion, and when to split classes through practical examples.

Stop waiting for GitHub Actions. Rails 8.1's local CI runs your tests in seconds on your own machine. Here's how it works.

Technical deep-dive into the design decisions that make Broadcast a truly self-hostable Rails application.

A new extension to Minitest Expectations by yours truly is the perfect illustration for this philosophy of programming.

As developers, we’re living in a time where building applications from scratch is easier than ever, thanks to AI tools like Claude Code. Our…

I see some common pitfalls when people try to do Shape Up "by the book." There are things in the book that are Basecamp-specific or often misunderstood, and teams who successfully adopt Shape Up route around them.

Lately, I've been reminded of the heady days of my agile youth by how often I've found myself asking, "how will we test this?" As I've mentioned…

Combining finest craftsmanship with elegant design to ship innovative digital experiences.

Last week, I wrote about my experience working with the team at Cloud Four, and in particular some of their great practices around PR management. Today, I wanted to talk specifically about a habit my friend Gerardo Rodriguez got me into: reviewing your own pull request. It’s pretty simple. When you create a pull request in GitHub, click on the Files changed tab, and scroll through the diff. Anywhere you’ve done something new that’s not already explained by in-code comments, add a comment in the GUI about what you did and why.

Fully functional OTP entry may be easier than you think.

Styling, UX, validation

On the benefits of using the default RESTful actions to prevent controllers from becoming too big and confusing.

Open source maintainers are getting more contributions than ever, thanks to AI-assisted coding. Here's how GitHub Copilot Code Review can help.

A well-designed API feels invisible, it just works. Behind that simplicity lies a set of consistent design principles that make APIs predictable, secure, and scalable.

Fix slow Rails apps in 5 steps. Guide covers N+1 queries, missing indexes, memory bloat, view rendering & asset compilation with real-world examples.

If you want to go fast, go alone; if you want to go far, go alone too. (mostly)

PostgreSQL 13 is reaching end of life on November 13, 2025. Treat your upgrade not as maintenance, but rather as an investment in security, stability, and innovation.

I've noticed that some of the pushback against using AI to code stems from people not knowing how to...

The majority of us are a bunch of self taught people with rather spotty knowledge and that's fine! Kilian (also self taught) is here to share some of the computer science fundamentals you probably are missing with the aim to improve your code in the long term.

Learn the ins and outs of building a game-based join code feature.

Build multiple products from a single Rails codebase using variants and custom configuration class.

Hi, it’s Claudio Baccigalupo. Let’s explore this week’s changes in the Rails codebase.

The Anchor Positioning API in CSS is very powerful. This is the beginning of a series where we understand it through the perfect use-case: tooltips.

Learn how to integrate MCP Server with GitHub Copilot to transform your Rails app into an AI-powered translation platform with smart automation and speed.