Short Ruby Newsletter - edition 127

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Table of Contents

• 🚀 Launches and discounts

• 📅 Events

• 👉 All about Code and Ruby

• 🧰 Gems, Libraries, Tools and Updates

• More content: 📚 🗞 🎧 🎥 ✍🏾

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• Please excuse the lack of polish in this ad—we’re a team of developers, not marketers. 😅

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• Whether or not you use Judoscale, you should check out our guides to configuring Rails for production, scaling Sidekiq, and understanding request queue time.

🚀 Launches and discounts

🚀 Adam McCrea launched an exciting new tool for comparing hosting costs of web applications across multiple platforms, allowing for side-by-side price comparisons. If you are interested, you can try it right away 🥳 → PaaS Pricing Calculator

🚀 Chetan Mittal launched a new book Mastering Enums in Rails

You can also read the other online book they published Mastering Building PWA in Rails

📅 Events

📅 Kasper Timm Hansen announced an online event 🎫 If you want to participate, here is the link to this event: Action View-Source Deep-Dive

📅 Ruby Central announced more details on RailsConf 2025 🎉

📅 Euruko announced the opening of their Call for Proposals for EuRuKo 2025

📅 Irina Nazarova announced more news on SF Ruby Meetup 🔥

👉 All about Code and Ruby

👉 InfoSec reported critical vulnerabilities in the ruby-saml gem that allow attackers to bypass authentication, currently an update is available for this gem. If you are interested in finding more information about this vulnerability, InfoSec shared a detailed blog and you can check the ruby-saml release notes here. Github also published an article about this vulnereability. 

👉 Ruby on Rails announced a new release 8.0.2 🎉. For more details, see the full changelog 💪

👉 Esparta shared his experience of bundle being interrupted during dependency installation while upgrading to Ruby 3.4.x ‼️ This is a complex thread, you can read everything from it on Mastodon

👉 Matt Yoder shared a Ruby puzzle about string-freezing behavior 🧩

👉 Jochen Lillich shared his appreciation for Ruby's expressive syntax features

👉 Vladimir Dementyev showcased how easy it is to run Avo directly in the browser

💻 Code Samples

️️💻 Peter Solnica shared his discovery that Ruby's byteslice method creates new string instances when operating on frozen empty strings

️💻 Adam McCrea shared some insights on configuring Rails for a platform like Heroku

️💻 Graceful.Dev shared a trick about using filter and map together efficiently 🤔

️💻 Michael Koper shared a security tip to prevent admin account password resets 🕵️‍♂️

️💻 David Heinemeier Hansson shared with amazement that Claude identified Rails' CONCERNS as the prettiest code in the Rails source 🤩

️💻 Zeke Gabrielse shared code showing a Rails migration that consolidates multiple authentication error codes into a single CREDENTIALS_INVALID code 🧑‍💻

️💻 Thomas Leitner asked his community how to efficiently remove a specific number of trailing elements from an array without creating a new result array

Gregory Brown joined in and offered a solution

and Tomas went even further on this example by doing some performance benchmarks

️💻 Gregory Brown shared a code sample about Ruby exceptions

️💻 Hans Schnedlitz shared a code sample about a feature from graphql-ruby 📈 Here you can read more about this topic: Async Source Execution 🌏

️💻 Yaroslav Shmarov shared a tip for access & edit Rails encrypted credential 🔐

️💻 Ruby Cademy highlighted Array#inquiry for writing more expressive code

️💻 Ismael Celis demonstrated the use of Plumb to decorate and validate third-party objects 🧐

️💻 Ruby Cademy highlighted Rake's ability to run tasks in parallel using multitask

️💻 Alex Yarotsky highlighted the invert_where method in Active Record that lets you easily flip query conditions without rewriting them

📐 Thinking about Code Design

️️📐 Nate Berkopec shared advice on optimizing ActiveRecord database connections by using external poolers and a large pool setting

️📐 Xavier Noria raised a question about Ruby's flat_map method, suggesting map_flat as a more intuitive alternative name. I recommend you to read the conversation on Bluesky as it is very intersting to discover how the developers think about the naming:

️📐 Gregory Brown shared how searching an unexpected Socket::ResolutionError message from his RSS feed script immediately revealed the problem, despite not finding a detailed explanation

️📐Xavier Noria questioned whether it's possible to write an atomic Hash#get_or_set method in Ruby using only GVL protection without C extensions

️📐 Joël Quenneville shared some tips on testing, especially on Rails apps 🧪

️📐 Ismael Celis shared how handy with(attribute: value) helper can be 🔝

️📐 Errol Schmidt shared their top 5 good and bad findings from Ruby on Rails app reviews based on production applications at reinteractive

👍 Top 5 Good section

👎 Top 5 Bad Section

💡Around code (news, findings, books, and more - all about Ruby)

💡 Donn Felker shared an interesting business opportunity ✨

💡 Remi Mercier asked about questions that people have when starting to work with Minitest:

Here are some replies:

💡 Lucian Ghinda highlighted an interesting aspect from an article about the future of Ruby in the AI era 🤖. Here you can read the article: Ruby's Renaissance in the AI Era

💡 Sourav shared his experience learning Ruby on Rails from a React/Next.js background, posting a thread full of illustrations and examples worth reading on X

💡 Greg Molnar shared an opportunity to get a free ticket to Friendly.rb

❤️ Why Choose Ruby and Rails

❤️ Radamés Roriz expressed his belief that Rails is the ideal platform for AI integration due to its stability

❤️ Irina Nazarova expressed a vision for the Rails + AI ecosystem where features available as paid cloud services in other frameworks would be free and open source

🧰 Gems, Libraries, Tools and Updates

🆕 New Gems and Repos

🆕 Carmine Paolino shared the release of a new gem RubyLLM. Here is also the article where the author of this gem, Carmine Paolino, talks about the usage of the RubyLLM: Introducing RubyLLM 1.0: A Beautiful Way to Work with AI. See also the Hacker News discussion here (650+ points, 165 comments)

🆕 Sean Gregory published a new gem Hokusai - A Ruby library for authoring GUI applications

🆕 Bruno announced a new gem Ruberto - A Ruby API wrapper for Uber

🆕 Brad Gessler announced a new gem superlink: A more powerful path and url generator for Rails

🆕 Tomasz Kowalewski published a gem memplify - Simplify memory profiling with memplify

🆕 Zach Morek published an interesting project DOOM.rb - A Ruby implementation of the classic DOOM game engine, focusing on vanilla accuracy inspired by Chocolate DOOM. Here is the current roadmap:

🧰 Updates

🧰 Mike Perham :sidekiq: announced an update about Sidekiq. If you are interested, check the blog version of this release 🥋

🧰 Jorge Manrubia announced a new version of Trix

🧰 activeagents.ai announced a significant update to their gem with many improvements ✨For more details, you can visit the blog version of this release 🕵️‍♂️

🧰 Bozhidar Batsov (a.k.a. Bug) announced an update on RuboCop 🤖

🧰 Jeremy Evans announced a new version of Roda 3.90.0

🧰 Brad Gessler announced a new version of Sitepress 4.0.6. You can try it right away, go on sitepress.cc for more details 💪

🧰 Camilo announced a new version of standard

🧰 Alex Rudall announced an update for ruby-openai v8🦾

🧰 Ruby Gems published a new edition 3.6.6 Released

More content: 📚 🗞 🎧 🎥 ✍🏾

🗞 Newsletters

🗞 Hotwire Weekly published a new article about Week 11 - Real-time Sync with Hotwire, Hotwire Native Bridge Components Collection, and more!

🗞 Ruby On Rails published a new edition about Ruby on Rails - Continuous integration at your fingertips

🗞 Ruby Weekly published a new article about Sidekiq 8.0

🗞 Awesome Ruby Newsletter published a new article about 💎 Issue 460 - Introducing Sidekiq 8.0

🗞 Sajjad Umar published a new article about Ruby on Rails — March 2025

🎧 Podcasts

🎧 Jason Swett published a new podcast: Code with Jason: Databases at Scale with Prarthana

🎧 Chris Oliver and Andrew Mason published a new episode about Stripes Subscription Challenges

🎥 Videos

🎥 Zhephyn posted a new video Ruby Jr Developer Book Club - Chapters 13-14

🎥 Arkency published a new video about Different flavours of events in your Ruby on Rails application

🎥 Guillaume Briday published a new video about Rails 8: Multi-db with Solid Queue, Solid Cache and Kamal - Geneva.rb Meetup - 03/2025

🎥 Scott Werner published a new video about Const_missing

🎥 Errol Schmidt published a new video about Monitor Real-Time Engagement via Heroku Connect & Agentforce

✍🏾 Articles

What’s new 🆕

🆕 Stan Lo posted a new article My Ruby Debugging Tips in 2025

🆕 Adam McCrea shared a new article An Opinionated Guide to Configuring Rails on Heroku and about The Ultimate Guide to Scaling Sidekiq

🆕 Avo published a new article about Testing OmniAuth authentication

🆕 Scout Monitoring published a new article about Caching Strategies for Ultra-High Performance in Ruby on Rails, Part 1

🆕 Rails Designer published a new article about Limit Spam Sign Ups in Rails Apps and about Using the Keyboard with Stimulus

🆕 Jeffery Morhous published a new article about How to use Solid Cache in Rails

🆕 Benoit Daloze published a new article about Matching Regexps 200 Times Faster

🆕 Josef Strzibny published a new article about Predownloading embedding models in Rails with Kamal

🆕 Chetan Mittal posted a new article Integer Enums vs. String Enums in Rails: Which One Should You Use?

🆕 Louis Antonopoulos published a new article about Hotwire and That Syncing Feeling

🆕 Lukasz Reszke shared a new article Is your Rails application special?

🆕 Akshay Khot published a new article about Working with HTTP Responses in Rails

🆕 Andrey Eremin published a new article about Why Static Typing is Essential for Efficient Ruby and Rails Development

🆕 David Morales published a new article about ERB: Embedding Ruby in HTML

🆕 Josef Strzibny published a new article about Minitest vs RSpec for testing Rails applications

🆕 Kevin Murphy published a new article about Preserving Flash Messages in Rails

🆕 Rich Steinmetz published a new article about Rails 8 on Kamal example setup with Sidekiq, Redis and Postgres

🆕 Greg Molnar published a new article about Exploiting LLM tools and about Validating password strength

🆕 Benoit Daloze published a new article about Matching Regexps 200 Times Faster

🆕 Trésor Bireke published a new article about Finding the opposite of what you have with rails invert_where

🆕 Saeolun posted a new article about ActiveModel::Attributes::Normalization

🆕 Scott Werner published a new article about Const_missing and AI: A Ruby Metaprogramming Experiment

How-TOs 📝

📝 Vini Oyama published a new article about Building a Multi-Page guided tour with Rails + Driver.js

📝 Josh Branchaud posted a new article: Connect To Production Rails Console on AWS / Flightcontrol

📝 Jeffery Morhous posted an article about How to use Solid Cache in Rails

📝 Igor Alexandrov published a new article about Automate your builds with GitHub Actions

📝 Reni Mercier published a new article about Speed up RSpec tests: understand lifecycle and execution

Related ✍️

✍️ Andrey Sitnik published a new article about How to make your open source popular

✍️ Muhamed Isabegovic posted a new article: From zero to one: Thoughts on the past few years

✍️ Dave Thomas posted a new article about Agility On An Index Card

✍️ Lucian Ghinda published a new article about How to implement JSON-LD Schema for your blog