How Ruby Powers One of the Most Complex Healthcare Systems in the World

Inside DENTIS, the cloud dental platform built by Medley, Inc. In 2025, at RubyWorld Conference, Toshio Maki — Engineering Manager and Head of the Dental Clinic Business Unit at Medley, Inc. — presented one of the most impressive real-world applications of Ruby in modern healthcare p30-2. The talk, titled: “Ruby powering Dental DX – Development … Continue reading How Ruby Powers One of the Most Complex Healthcare Systems in the World →

How RIZAP Technologies Turns Junior Developers Into Senior Ruby Engineers

How RIZAP Technologies Turns Junior Developers Into Senior Ruby Engineers December 29, 2025 At RubyWorld Conference 2025 and Kaigi on Rails 2025, a talk by Tomohiro Umeda from RIZAP Technologies quietly delivered one of the most important messages for the future of Ruby engineering. Most companies would love to hire senior engineers. But in reality … Continue reading How RIZAP Technologies Turns Junior Developers Into Senior Ruby Engineers →

Ruby at the Front Line of Disaster Prevention

Ruby at the Front Line of Disaster Prevention December 26, 2025 How Tokyo Gas Uses Ruby to Protect Millions of People During Earthquakes Based on the RubyWorld Conference 2025 presentation by Maika Yamaguchi, Tokyo Gas i-Net Corp. When we think about Ruby in production, we usually imagine web platforms, SaaS products, or developer tools. But … Continue reading Ruby at the Front Line of Disaster Prevention →

Running Ruby 4 with Ruby::BOX inside Docker (Alpine)

Ruby 4 with Ruby::BOX December 24, 2025 Ruby 4 introduces one of the most important runtime features in the history of the language: Ruby::BOX. It allows Ruby to execute multiple isolated class worlds inside the same process, finally making it possible to load conflicting libraries, plugins, and user code safely. In this guide we will … Continue reading Running Ruby 4 with Ruby::BOX inside Docker (Alpine) →

Building a DFA-Based Regular Expression Engine in Ruby

December 23, 2025 Inspired by a talk by Yudai Takada (@ydah) at Hokuriku Ruby Kaigi 01 Advertise on RubyStackNews RubyStackNews is a niche publication read by Ruby and Rails developers worldwide. Our audience includes senior engineers, tech leads, and decision-makers from the US, Europe, and Asia. Sponsorship Options 📝 Article Sponsorship Your brand featured inside … Continue reading Building a DFA-Based Regular Expression Engine in Ruby →

Ruby at 30: A Community Built from Imperfection

December 22, 2025 Reflections from RubyRelease30th and Matz’s Keynote As 2025 comes to an end and Ruby moves closer to the long-awaited release of Ruby 4, the Ruby Release 30th Anniversary Party, held on December 20, felt like more than a commemorative event. It was a moment of reflection—about history, values, and why Ruby continues … Continue reading Ruby at 30: A Community Built from Imperfection →

Parsing Taiwanese Like Code

December 19, 2025 How Ruby, Parser Theory, and Linguistic Precision Solved a Problem No One Wanted At RubyWorld Conference 2025, Mu-Fan Teng (鄧慕凡)—founder of 5xRuby and long-time Ruby community leader—presented a talk that quietly demonstrated something powerful: compiler theory is not limited to programming languages. In “Parsing Taiwanese Like Code”, Teng showed how a real-world … Continue reading Parsing Taiwanese Like Code →

A Definitive Guide to Running PicoRuby on ESP32 (ESP-IDF 5.x)

December 18, 2025 Running PicoRuby on an ESP32 is absolutely possible — but today it is not straightforward, and most guides omit critical details. This article consolidates everything that actually matters, based on real-world setup, debugging, and integration with ESP-IDF 5.5. If you follow this guide exactly, you will end with: PicoRuby running on an … Continue reading A Definitive Guide to Running PicoRuby on ESP32 (ESP-IDF 5.x) →

PicoRuby: Ruby Beyond Rails

Why Ruby Still Has Unexplored Frontiers Why Ruby Still Has Unexplored Frontiers For many developers, Ruby is synonymous with Rails, web applications, and backend services. That association is understandable—and well earned—but it is also incomplete. Ruby has always been more than a framework or a web stack. It is a language designed for human expression, … Continue reading PicoRuby: Ruby Beyond Rails →

From Reading to Mastery: Turning Metaprogramming Ruby into a Hands-On Learning Platform

December 17, 2025 Metaprogramming has always been one of Ruby’s most powerful — and most intimidating — features. While the book Metaprogramming Ruby by Paolo Perrotta is widely regarded as a classic, many developers share the same experience: it’s brilliant, but hard to truly internalize by just reading it. In a talk presented at RubyWorld … Continue reading From Reading to Mastery: Turning Metaprogramming Ruby into a Hands-On Learning Platform →