Linking Ruby knowledge from the most remote places in the world.
Independent Ruby & Rails publication for engineers and technical leaders worldwide
January 6, 2026 Why ruby-libgd is becoming Ruby’s new graphics engine Yesterday something important happened in the Ruby ecosystem. I added a native sepia filter to ruby-libgd — Ruby’s new binding to the GD Graphics Library — and with it Ruby took another step toward regaining something it quietly lost over the last decade: a … Continue reading Ruby just got a real sepia filter
Ruby on Rails Developer | Ruby, Backend January 2, 2026 In late 2025, during a RubyConf presentation about disaster-response systems, an uncomfortable truth was stated publicly: Generating map tiles and images on the server is difficult in Ruby. RMagick and MiniMagick were too slow. ruby-gd is used, but it is poorly maintained. This was not … Continue reading Rebuilding Ruby’s Image Processing Layer: Why ruby-libgd Matters for GIS and the Future of Ruby
December 31, 2025 How Bloomo built a regulated trading system from scratch By Satoshi Kobayashi (noel), CTO – Bloomo Securities RubyWorld Conference 2025 – Day 1 Introduction At RubyWorld Conference 2025, Satoshi Kobayashi (小林悟史 / noel), CTO of Bloomo Securities Inc., delivered one of the most consequential Ruby case studies in recent years: “Building a … Continue reading Building a Securities Brokerage with Ruby and Go
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
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)
December 23, 2025 Inspired by a talk by Yudai Takada (@ydah) at Hokuriku Ruby Kaigi 01 Scan to try 🎯 Live Demo Available Introducing MapView Render beautiful, production-ready maps directly from your Ruby backend. No external APIs. No dependencies. Just pure speed and control. ✓ Zero external dependencies ✓ Lightning-fast rendering ✓ Production-ready & battle-tested … Continue reading Building a DFA-Based Regular Expression Engine in Ruby
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
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
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)
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
Linking Ruby knowledge from the most remote places in the world. 