~rubyweekly | Bookmarks (188)

Exploring Ruby Ractors — Inspired by some recent posts about Ractors, John set out to see if he could use them to peg his CPU usage (“I paid for 10 cores, I’m gonna use 10 cores”). A fun exploration, including a look at just how much YJIT contributes to the modern Ruby performance story.

PicoRuby: A Tiny Ruby Implementation for Microcontrollers — An interesting alternative mruby implementation designed to get its footprint down even smaller to run on small one-chip microcontrollers. Just 256KB of ROM and 128KB of RAM is needed.

A Practical Guide to Taming Postgres Isolation Anomalies — A practical, Ruby-themed (though SQL heavy) walkthrough of Postgres’ concurrency control, detailing real-world issues like lost updates, write skew, and other isolation anomalies. Even if you rarely run into conflicts, you’ll come away with valuable insights on managing transactions.

Creating Value Objects the Idiomatic Way — If you’ve got a value more elaborate than a number, string or simple list or hash, you might choose to use a class to create objects that represent those values: value objects. The modern way to do this in Ruby is with the Data class and Lucian shows it off here.

Simple Declarative Presence for Hotwire Apps with AnyCable — How to implement user presence tracking in a Hotwire application with minimal effort by using AnyCable and its new primitives.

Finding the Opposite of What You Have with Rails invert_where — Rails has so many helpful methods that many simply skip my radar as someone who’s been using Rails for so long. invert_where is certainly new to me and does something quite interesting..

🚀 Need to Upgrade Ruby? Here is a Free Step by Step Guide by FastRuby — The team behind Bonsai and the next_rails gem shares their best practices for upgrading to any Ruby version.

Just the Docs: A Jekyll Theme for Documentation Sites — Only tangentially Ruby related (but it is for Jekyll) but I love the look of docs/project sites using this. It’s clean, simple, and makes a lot of right design decisions for you out of the box.

TruffleRuby 24.2: The High Performance Ruby Implementation — Now supporting Ruby 3.3.5 features, TruffleRuby is an interesting Ruby implementation based upon GraalVM (a variant of the JDK with ahead-of-time native compilation well suited for dynamic languages).

Confused About Request Queue Time? — Check out our illustrated guide, with diagrams galore and just a tiny bit of math.

Psyllium: A Gem Making It Easier to Use Fibers — Adds convenience methods to the Fiber class to make it easier to use in the same way that threads might be used.

iri: Simple Immutable Ruby URI Builder — Offers an interesting chain-able fluent API for adding various elements to URLs.

Ruby Debugging Tips and Recommendations in 2025 — A brief piece but packed with advice from Stan (who knows a thing or two from all his work on debug.rb and modernizing IRB). Did you know you can use the Ruby LSP extension with debug.rb?

Ruby, Ractors, and Lock-Free Data Structures — An extensive, multi-chapter article that goes into serious depth about Ractors, lock-free data structures and shared mutable global state in multi-threaded Ruby apps. There’s also code if you want to play along or experiment.

▶  Building an 'Always-On' Production Profiler — A talk from Ruby Kaigi 2024 on Datadog’s production profiler. There’s a lot of detail here on how and what (CPU profiles, GC, allocations, heap live objects) to profile, various challenges of profiling in production, and using Rust in a gem.

Installing the sassc Gem on a Mac: A Debugging Story — Native extensions are often the source of a failed bundle install and never particularly fun to figure out (at least for me). Luckily, Richard takes us on a tour of the issues here, advice that could be useful beyond just sassc.

Rails 8's Solid Trifecta: Cache, Cable, and Queue — A comparison of Rails 8’s new systems for caching, WebSocket management, and background job queues versus the established options.

An Opinionated Guide to Configuring Rails on Heroku — A variety of settings and other considerations for getting the most out of your Heroku setup.

Want to Roll Your Own Autoscaling? Here Are Our Secrets 🤫 — Does it make sense for us to write this guide? No! Did we do it anyway? Yes! We did it for you ❤️

Turnstiled: Use Cloudflare Turnstile in Rails Apps — Turnstile is a Cloudflare service that replaces CAPTCHAs – you’ve almost certainly encountered them on many sites.

Introducing Sidekiq 8.0 — Ruby’s most popular background job framework has a new release that adds easy-to-do profiling, a significant overhaul to its WebUI, a new ‘job iteration’ feature for dividing long running jobs into smaller chunks, and more. Redis 7+ and Ruby 3.2+ are now required.

Tech Debt Slowing You Down? A Case Study About Bonsai — See how Bonsai by FastRuby.io  transformed Valid Eval with 2–5x performance gains, speedy upgrades, and enhanced security. Read the case study and boost your productivity. 🚀

Better Know a Ruby Thing: Method Lookup — “Let’s talk about method lookup in Ruby, which is from one perspective really clean and simple, and from another angle, kind of messy.”

Four Choices for Packaging Ruby Binary Distributions — Well, not exactly. Many attempts have been made over the years to distribute Ruby apps in binary form, but most seem abandoned. However, Tebako is looking like a good, maintained option with an active community.