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Update data in migrations like a boss. Don't write raw SQL in migration, don't define models in migrations again, don't use seeds. Use migration_data gem to keep your migrations up to date, migrate data in production, test data migration code and clean them up.

Someone's trash is another person's web server.

This Part 1 (of a 2-part series) is a practical, hands-on, applicable approach to database indexes. We’ll cover what B Trees are with a focus on deeply understanding, and internalizing how they store data on disk, and how your database uses them to speed up queries. This will set us up nicely for part 2, […]

I coded my latest app entirely in Markdown and let GitHub Copilot compile it into Go. This resulted in cleaner specs and faster iteration.

Dear Rubyists, Thank you for giving me this opportunity to share with you. We take our stewardship of the Ruby Gems ecosystem seriously. Our mission is clear: keep the language and the infrastructure you rely on stable, safe, and trustworthy. Before we get to what the next steps will be,

こんにちは、クラウド経費 テックリードの宮村（みやむー）@miyamura.koyo です。 10年選手になってきたRails製SaaSをメンテしています。以下の通り継続的にRuby / Railsのバージョンアップを実施しています。 moneyforward-dev.jp moneyforward-dev.jp 今回…

A CLI code-typing game that turns your source code into typing challenges - unhappychoice/gittype

6×4+4keys column-staggered split keyboard. Contribute to kata0510/Lily58 development by creating an account on GitHub.

Aria2TUI is a TUI client for the Aria2 download utility. - GitHub - grimandgreedy/aria2tui: Aria2TUI is a TUI client for the Aria2 download utility.

A better way to generate and send emails. Contribute to beautifulruby/supermail development by creating an account on GitHub.

Earlier this year, I was working on an event bus for the Rage framework. The event bus was designed...

We are going to set up Showcase for a Rails application in the first part of this three-part series on Showcase.

Showcase lets you build previews for your partials, components, view helpers, Stimulus controllers and more. - bullet-train-co/showcase

Compare SaaS and custom software based on cost, control, and growth. Learn which fits your business needs with real examples and a clear, expert voice.

Run your RSpec specs 2x-4x faster locally by parallelizing your test suite, using the handy parallel_rspec gem.

Start Rails in one command. Contribute to the-teacher/rails-start development by creating an account on GitHub.

Testing · sidekiq/sidekiq Wiki にあるように、sidekiqをテストで利用する際には3つのモードがあります。 fake(デフォルト) inline disable これらを切り替えるメソッドとしてSidekiq::Testing.fake!などがあります。これらのメソッドはブロックを受け付…

A command-line utility for taking automated screenshots of websites

Coding agents like Anthropic’s Claude Code and OpenAI’s Codex CLI represent a genuine step change in how useful LLMs can be for producing working code. These agents can now directly …

Anthropic released Claude Sonnet 4.5 today, with a very bold set of claims: Claude Sonnet 4.5 is the best coding model in the world. It’s the strongest model for building …

Notes from my Thoughtworks colleagues on AI-assisted software delivery

オープンソースのプロジェクトで採用されているCoC (Code of Conduct, 行動規範)を巡る議論が…

You can now send bookmarks straight into Raindrop.io from almost any app on your Mac — Apple News, Safari, Music, Mail, Notes, and…

We are in the midst of a Ruby drama for the ages. I'm sure a bunch of people figured we were all too old for this shit, but apparently we are not. This debate…

Fact-checking the claims made by Ruby Central about the RubyGems takeover.

https://kaigionrails.org/2025/talks/falcon8823/#day1 CI/CD環境が高速であることは、開発物の信頼性を維持しながら高速に成果をユーザに届けることを可能にします。CI/CD環境が遅いと、失敗に気づくのも遅くなり修正サイクルはどんどん重くなっていき…

p2: https://speakerdeck.com/morihirok/ruby-on-rails-nole-simifang p4: https://speakerdeck.com/moro/dynamic?slide=41 p44: https://github.com/sidekiq/si…