--- title: "Small PRs, big Ruby speedups" publication: "Ruby Weekly" issue: 804 published_at: "2026-06-11" canonical_url: "https://rubyweekly.com/issues/804" --- Plus Proc#with_refinements, Rails ERD's Mermaid-powered return, and Ruby Central's modernizations. #​804 — June 11, 2026 [Read on the Web](https://rubyweekly.com/issues/804) Together with [![AppSignal logo\](https://res.cloudinary.com/cpress/image/upload/c_fill,g_auto,e_trim,w_700,h_120/e_make_transparent/co_white,e_outline:7/lme8p344dw1aodshz9px.png)](https://www.appsignal.com/?utm_source=ruby-weekly&utm_medium=newsletter&utm_campaign=appsignal_q2_2026&utm_content=all-in-one) Ruby Weekly [![\](https://res.cloudinary.com/cpress/image/upload/w_1280,e_sharpen:60,q_auto/tjuloeovuopl8xt7gwjy.jpg)](https://mensfeld.pl/2026/06/ruby-performance-roundup/) 📈 [Small PRs, Big Speedups: The Ruby Performance Work You Almost Missed](https://mensfeld.pl/2026/06/ruby-performance-roundup/) — A roundup of recent Ruby performance PRs covering strings, file handling, GC, concurrency, Prism, JITs, and more. It’s a neat snapshot of how much incremental performance work has landed in CRuby in the past year. Maciej Mensfeld [![\](https://res.cloudinary.com/cpress/image/upload/c_limit,w_480,h_480,q_auto/copm/b8605252.png)](https://www.appsignal.com/?utm_source=ruby-weekly&utm_medium=newsletter&utm_campaign=appsignal_q2_2026&utm_content=all-in-one) [Stop Juggling 5 Tools to Monitor One Rails App](https://www.appsignal.com/?utm_source=ruby-weekly&utm_medium=newsletter&utm_campaign=appsignal_q2_2026&utm_content=all-in-one) — Errors, performance, logs, uptime, host metrics — AppSignal covers your whole Rails stack. Auto-instruments Active Record, Sidekiq, Puma, and ActionView out of the box. Request-based pricing, unlimited seats. [Free 30-day trial, no credit card](https://www.appsignal.com/?utm_source=ruby-weekly&utm_medium=newsletter&utm_campaign=appsignal_q2_2026&utm_content=all-in-one). AppSignal sponsor [Ruby Central Modernizes Its Bylaws (and Reshuffles Its Officers)](https://rubycentral.org/news/modernizing-ruby-centrals-bylaws-and-officer-updates/) — Ruby Central has rewritten [its bylaws](https://storage.ghost.io/c/17/0a/170a5cb5-5524-4ba0-93b6-f17fc9bacca6/content/files/2026/06/Ruby-Central-Bylaws--2026.06.05-.pdf) _(PDF)_ to formalize participatory governance, committees, and transparency requirements. Five ‘steering committees’ will formally launch at [RubyConf](https://rubyconf.org/) next month. Ran Craycraft (Ruby Central) 💡 In a further update, Ruby Central's board of directors [explains how community participation will actually work](https://rubycentral.org/news/governance-expanding-participation-in-ruby-central/). **⚡️ IN BRIEF:** - 🔒 Ruby Central has received a grant to [fund a team of Security Engineers in Residence](https://rubycentral.org/news/strengthening-security-for-the-ruby-ecosystem/) to find vulnerabilities in gems and make reports. - The [gem.coop](https://gem.coop/) gem registry/server has officially [launched its support for namespaces](https://gem.coop/updates/7/) and you can reserve your own today. - With the release of the Ruby 3.1-compatible [JRuby 9.4.15.0](https://www.jruby.org/2026/06/08/jruby-9-4-15-0.html), JRuby 9.4 enters EOL (end-of-life). [JRuby 10](https://www.jruby.org/2026/04/21/jruby-10-1-0-0.html) is the current, Ruby 4.0-targeting version. [Add `Proc#with_refinements` to Ruby](https://bugs.ruby-lang.org/issues/22097) — Ruby’s longest serving core team member (bar Matz!) has implemented _block-level_ refinements, so extensions made to a class only take effect within a new proc returned by `with_refinements`, with the original proc unaffected. There’s [a PR](https://github.com/ruby/ruby/pull/17248/changes) if you want to play. Shugo Maeda [Beyond Mocked Payloads: End-to-End Stripe Webhook Testing](https://danielabaron.me/blog/stripe-test-clocks-payment-webhooks/) — If you’re working on a Stripe-based billing system in a Ruby app, this is useful. Daniela Baron [🚨 Rails 7.2: Security Support Ends Aug 9. Upgrade & Stay Compliant](https://go.fastruby.io/5v5) — Running EOL Rails risks HIPAA, PCI DSS, and SOC2 compliance. Map your upgrade with [a team that's done it 100s of times](https://go.fastruby.io/0i6). FastRuby.io® | 0-Downtime Upgrades sponsor 📄 [Beyond `Enumerable`: Heaps and Priority Queues](https://baweaver.com/writing/2026/06/06/beyond-enumerable-heaps-and-priority-queues/) Brandon Weaver 📺 [Long Polling for New Records in a Rails App](https://www.driftingruby.com/episodes/polling-for-new-records) – For when WebSockets aren’t the right solution. Drifting Ruby 📄 [How to Leverage PurgeCSS in Your Rails App for Faster Stylesheets](https://www.fastruby.io/blog/how-to-leverage-purgecss-in-your-rails-app-for-faster-stylesheets.html) Henrique Medeiros 📄 [When Rails Engines are the Wrong Tool](https://davidslv.uk/2026/06/09/when-rails-engines-are-wrong-tool.html) David Silva 🛠 Code & Tools [![\](https://res.cloudinary.com/cpress/image/upload/w_1280,e_sharpen:60,q_auto/mbxy64ttorzwc9x5puj8.jpg)](https://github.com/voormedia/rails-erd/releases/tag/v2.0.0) [Rails ERD 2.0: Turn Your Rails Models into a Diagram](https://github.com/voormedia/rails-erd/releases/tag/v2.0.0) — After a few years dormant, Rails ERD is back to turn your modern Rails apps’ models into entity-relationship diagrams. Say goodbye to the complex Graphviz dependency; 2.0 uses the popular [Mermaid](https://mermaid.ai/open-source/) format (which can render directly in GitHub `README`s). Kerri Miller et al. [No New Migration. No New Gem. Just Faster Analytics](https://www.tigerdata.com/go/trial?utm_source=content-syndication&utm_medium=referral&utm_campaign=ruby-weekly-newsletter) — TimescaleDB extends Postgres. Hypertables, 95% compression, aggregates. No new migration, no new gem. [$1000 credit](https://www.tigerdata.com/go/trial?utm_source=content-syndication&utm_medium=referral&utm_campaign=ruby-weekly-newsletter). Tiger Data (creators of TimescaleDB) sponsor 🤖 [RubyLLM 1.16: Now with Concurrent Tool Execution](https://paolino.me/rubyllm-1-16/) — The popular do-everything LLM library can now execute multiple tool calls concurrently, emit _ActiveSupport::Notifications_ events for observability, and support custom API endpoints for every provider. Carmine Paolino [WhatLanguage 2.0: Natural Language Detection for 160+ Languages](https://github.com/peterc/whatlanguage) — I first released this in 2007 to detect ~20 natural languages using a Bloom filter approach. Now it’s been reimplemented and handles many more languages via a trigram-based statistical technique. Peter Cooper - [RubyGems and Bundler 4.0.14](https://blog.rubygems.org/2026/06/10/4.0.14-released.html) – Minor bugfixes for the new cooldown feature, and [executables/bins are now validated](https://github.com/ruby/rubygems/pull/9595) to have plain basenames and to stay within the gem directory. - [SmarterJSON 1.1](https://github.com/tilo/smarter_json) – A lenient but fast JSON processing library designed to handle potentially messy and malformed JSON. - [Lamby 7.0](https://github.com/rails-lambda/lamby) – An adapter to run Rack/Rails apps on top of AWS Lambda. 📰 Classifieds 💘 Dyno Sniper has landed! [Judoscale’s latest feature](https://judoscale.com/docs/sniper?utm_source=ruby-weekly&utm_medium=newsletter&utm_campaign=dyno-sniper&utm_content=solved-for-good) solves the noisy neighbor problem for good. --- Here's one for your bookmarks: ♦️ [Planet Ruby](https://planetruby.org) brings together the last month of the top Ruby blogs in one place. **EXPERIMENTAL FINDS AND SUBMISSIONS:** - 🤖 [apple-foundation-models-ruby-sdk](https://github.com/afomera/apple-foundation-models-ruby-sdk) – Ruby bindings for Apple's Foundation Models framework so you can use the on-device Apple Intelligence model. Andrea Fomera - [Jo](https://jo-lang.org/) – A new statically-typed language with compile-time sandboxing that compiles to both Ruby and Python. TypeScope - 🤖 [ruby-agent](https://github.com/stiller/ruby-agent) – A minimalist instructional agentic coding harness in plain Ruby. Joachim Nolten - [Irb::Autosuggestions](https://github.com/unurgunite/irb-autosuggestions) – Fish-like autosuggestions for `irb`. unurgunite - [http_decoy](https://github.com/jibranusman95/http_decoy) – A 'real fake' HTTP server for RSpec. Jibran Usman - [mruby-graphviz](https://codeberg.org/gemmaro/mruby-graphviz) – Graphviz bindings for mruby. gemmaro Curated by [Peter Cooper](https://twitter.com/cooperx86) and [Glenn Goodrich](https://twitter.com/ruprict). Published by [Cooperpress](https://cooperpress.com/). [Change your email](https://rubyweekly.com/edit_subscription/*|UID|*) or [Stop getting this newsletter.](https://rubyweekly.com/leave/*|UID|*) © Cooper Press Ltd · Fairfield Enterprise Centre, Louth, LN11 0LS, United Kingdom Other weekly newsletters we publish include [Postgres Weekly](https://postgresweekly.com/), [React Status](https://react.statuscode.com/), [Frontend Focus](https://frontendfoc.us/), and [JavaScript Weekly](https://javascriptweekly.com/).