🔖 Bookmarks

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.

Building an AI Social Media Manager with Ruby on Rails: Architecture, Automation, and Lessons...

Master RSpec testing for LangChain-Ruby with 25 working examples. Learn mocking, VCR, WebMock, and CI/CD automation. Build reliable AI features with 95%+ test…

Nano Banana hides behind Google's chat endpoint. Here's the straight line to ship it with RubyLLM.

I've been thinking about how we approach accessibility in web development. Particularly about trusting the browser to implement things in an accessible way.

How container queries help move an element to the opposite side of its parent container when both have dynamic responsive dimensions.

How the most common type of document maps to delegation

Senior Level Ruby on Rails Developer for Hire

I've been signing my Git commits since 2020, and it's one of those security practices that seems...

The personal blog of Dave Rupert, web developer and podcaster from Austin, TX.

Rails 8.1 represents the work of over 500 contributors across 2500 commits since our last major release. After some weeks of people trying the betas and releases candidates, we are excited to share the final release.

Let’s try to peer behind the curtain and figure out the answer to these questions. Doing so has a couple of important benefits:

Learn how to design and build effective tools to be used by AI Agents

AsterMind-ELM is a modular, Extreme Learning Machine (ELM) library for JavaScript and TypeScript. We speak to its creator.

Build a Kanban board with columns and cards with Rails and Hotwire.

We get attached to code - sometimes to a fault. Old migrations are exactly that. They’re digital hoarding at its finest, cluttering up your codebase with files that serve absolutely no purpose other than to make you feel like you’re preserving some kind of historical record. But here’s the brutal truth: your old migrations are utterly useless. They’re worse than useless - they’re actively harmful. They’re taking up space, they are confusing (both for you and new developers on the project), and they give you a false sense of security about your database’s evolution. If your database is out-of-sync with schema.rb you need to solve that problem anyway, and - if anything - the migrations make that problem worse.