Building a Faster Bundler — The Shopify team has been working on improvements to Bundler and RubyGems with the goal of reducing bundle install times. Increasing the HTTP connection pool size, parallel git clones, and optimizing hotspots in the codebase provide big wins, but they seek our help with another area in particular: precompiled gems.

Edouard Chin and Eileen Uchitelle

Leaving Heroku? Plan Your Migration with FastRuby.io® 💸 — FastRuby analyzes your Rails app, add-ons, and infrastructure to map a migration to Hatchbox, Fly, or elsewhere. Get a step-by-step plan with cost estimates before you commit. Migrate confidently with our team of experts.

PaaS Migration Plans by FastRuby.io® sponsor

mruby 4.0 Enters Release Candidate Stage — mruby is a lightweight, embeddable subset of Ruby to run in constrained environments and that, like CRuby, is led by Matz. v4.0 adds support for pattern matching, many GC, memory and VM improvements, Cosmopolitan Libc support, a mirb overhaul, and more.

Matz and Team

How I Audit a Legacy Rails Codebase — A methodical walkthrough of how to approach an inherited codebase, including checking versions, scanning the Gemfile for red flags, reviewing the schema, and identifying perf hotspots.

Ally Piechowski

🤖 Mistral's Attempt to Put Rails Testing on Autopilot — A post from France’s best-known AI shop detailing an autonomous agent they’ve built to work on RSpec suites in Rails apps. The end result is called Mistral Vibe.

Langelier and Grosmaitre (Mistral)

AI Shouldn't Cost More Than It Saves — We can find where LLMs pay off, validate with real data, and tune for cost/effectiveness. Need help from experts? Let's talk.

SINAPTIA sponsor

Kiq: An Official TUI Admin Interface for Sidekiq — Citing renewed interest in TUIs, Mike has created kiq where you can monitor and (mostly) manage Sidekiq in the terminal. It’s built on top of RatatuiRuby.

Mike Perham

You Picked Postgres for a Reason. Don't Leave It for Analytics — TimescaleDB extends Postgres so analytics runs on live data. No second database, no pipeline. Start for free.

Tiger Data (creators of TimescaleDB) sponsor

🖼️ PureJPEG: A Pure Ruby JPEG Encoder and Decoder Library — Yes, this is one of mine! I wanted a pure Ruby way to work with JPEGs, including messing around with how they're encoded (to get some crunchy late 90s effects). There’s a little behind the scenes story of its development in the README.

Peter Cooper

WSDL 1.0: A WSDL Toolkit for Ruby — WSDL (Web Services Description Language) is an XML language that describes, most commonly, SOAP-based web services, and this library provides full WSDL 1.1 support. It’s from the creator of Savon, a well-used SOAP client library, so the author knows the space well.

rubiii

Rubydex: A Static Analysis Toolkit for Ruby — A new high-performance Ruby indexer with an MCP server designed for LLM tooling.

Shopify