🔖 Bookmarks

TL;DR I had Claude Code implement a very simplified version of Git in 13 languages. Ruby,...

Use with_options to apply shared options to validations, associations, callbacks, or routes.

How I replaced a find_or_create_by + lock + update_columns pattern with a single upsert call.

And what I tell my clients when they ask which framework to use for their Rails business.

Lead Programmer Mike Dalessio shares the benefits of multi-tenant databases and how his work with Fizzy led to the the Active Record Tenanted gem.

Finding the right model and prompt for your AI feature is harder than it looks. Spreadsheets help, until they don’t. So we did something about it.

How to delete all merged git branches locally with a single command. This one-liner has been in my zshrc since 2017 — I found it buried in the CIA's Vault7 l...

From Delayed Job to Solid Queue: How a 10-Year Rails App Finally Achieved Linear Scaling February 16, 2026 Lessons from Kaigi on Rails 2025 — Shohei Kobayashi In large Rails systems, background job…

Building a modern custom select with base-select.

Skills I use with Claude for shaping. Contribute to rjs/shaping-skills development by creating an account on GitHub.

In Memento, Leonard wakes up every morning with no memory of yesterday. He doesn't know where he is. He doesn't know what he did. The only things he trusts are the tattoos on his body. AI coding works the same way. Every session is a fresh wakeup in a motel

The same pattern Rails uses for Rails.env.production?

Build a production-grade personalized search engine entirely within Postgres using BM25 retrieval and vector-based reranking, no external infrastructure required.

We added Prometheus monitoring to Fast Retro and immediately spotted controllers with 200-400ms p95 latency. Here's how we traced them to N+1 queries and cut response times by up to 90%.

Use Rails 8.1's new job continuations to build a CSV import that survives worker restarts, picking up at the exact row it left off.

Jesse Waites - Developer, Designer, Mobile Developer, Product Designer

February 11, 2026 Compatibility, Protocol Changes, and Virtual Generated Columns in Rails 8.1 At Kaigi on Rails 2025, Rails Committer Yasuo Honda delivered a deep technical walkthrough titled: Rail…

Learn how to impersonate users in your Rails 8 app for support and debugging purposes with automatic expiration.

A more natural way to check if a value is in a collection

Learn how to dramatically speed up PostgreSQL full-text search by persisting TSVectors and using GIN indexes in Rails apps.

…or end up hunting for logic in jobs and controllers.

Putting a YouTube video inside a closed details element means it won't load until that details element is opened. We can use that.

Learn how to implement OAuth in a Hotwire Native application using bridge components

There’s a mass of data that holds a shape you can’t quite name.

Hello friends! I'd like to show you Ruby on Rails concepts I refreshed this week to Avoid Social...