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Working with maps usually means working with numbers — lots of numbers. If you want to render a map of a country, region, or continent, you normally need to know its exact bounding box: bbox = [-73.6, -55.1, -53.6, -21.7] # Argentina Not exactly readable. Not memorable. Not friendly. What if you could just say: … Continue reading 🌍 Rendering Maps by Name: Symbolic Geographic Extents in Ruby
RubyKaigi 2024: A Deep Technical Shift in Ruby’s Standard Library February 20, 2026 RubyKaigi 2024 — Historical ContextAlthough this presentation discusses Ruby 3.4–3.5 and the ecosystem has already moved forward to Ruby 4 by 2026, the strategic shift it describes — reducing the traditional standard library and externalizing functionality as gems — represents a fundamental … Continue reading 🧠 RubyKaigi 2024: A Deep Technical Shift in Ruby’s Standard Library (With Real Examples)
February 20, 2026 Lessons from RailsTokyo 2026 on using ActiveRecord as a relational engine—not just an ORM Modern Rails teams often inherit a paradox: controllers must be “thin,” views must be “dumb,” models must be “fat,” and yet production apps accumulate service objects, query objects, presenters, decorators, serializers, policies, and helpers until the architecture resembles … Continue reading What Rails Actually Wants: Tidying Controllers and Views Without Service Object Explosion
February 18, 2026 Based on a talk from Kaigi on Rails 2025 by Hayato Okumoto (TwoGate CTO) Because life is too short to watch bundle exec rspec scroll by like the credits of an extended director’s cut. ⏱️ The Universal Pain: Waiting for CI Every Rails developer eventually reaches enlightenment — not through meditation, but … Continue reading ⚡ From 30 Minutes to 2: Speed-Running Rails CI (Without Cheating… Much)
February 17, 2026 Modern Rails applications rarely fail because of authentication — they fail because of authorization complexity. As products grow, roles multiply, exceptions accumulate, and permission checks scatter across controllers, models, views, and frontend code. What begins as a simple current_user.admin? quickly becomes an unmaintainable web of implicit rules. At Kaigi on Rails 2025, … Continue reading Stop Checking admin?: Designing Authorization That Won’t Become Technical Debt (Kaigi on Rails 2025)
From Delayed Job to Solid Queue: How a 10-Year Rails App Finally Achieved Linear Scaling February 16, 2026 Lessons from Kaigi on Rails 2025 — Shohei Kobayashi In large Rails systems, background jobs are not a detail — they are the system. Email delivery, AI processing, document generation, data cleanup, notifications, analytics pipelines — everything … Continue reading From Delayed Job to Solid Queue: How a 10-Year Rails App Finally Achieved Linear Scaling
February 16, 2026 In 2025, at Rails g authentication from Kaigi on Rails 2025, developer Shinichi Maeshima presented an insightful talk on Rails 8’s new rails g authentication generator and its implications for how we build authentication in Rails apps. Rails has long given developers the building blocks for authentication — has_secure_password, session cookies, and … Continue reading Rails 8 Authentication: Why the New Built-in Generator Matters (and What It Means for Devise)
February 13, 2026 Range on Rails: How PostgreSQL Multirange Turned Complex Booking Logic into Elegant Simplicity At Kaigi on Rails 2025, Tomohiro Umeda from RIZAP Technologies presented a real-world backend engineering case study: how to build a flexible reservation system — without fixed time slots — using PostgreSQL’s Range and Multirange types. The talk, titled: … Continue reading Range on Rails: How PostgreSQL Multirange Turned Complex Booking Logic into Elegant Simplicity
Designing Safe Parallelism in Rails February 12, 2026 Eliminating Connection Pool Exhaustion in Production At Kaigi on Rails 2025, 片田 恭平 (@katakyo) delivered a deeply practical talk titled: “もう並列実行は怖くない — コネクション枯渇解消のための実践的アプローチ” (“Parallel Execution Is No Longer Scary — A Practical Approach to Eliminating Connection Pool Exhaustion”) もう並列実行は怖くない__コネクション枯渇解消のための実践的ア… This session explored a real-world scaling problem inside … Continue reading Designing Safe Parallelism in Rails
February 11, 2026 Compatibility, Protocol Changes, and Virtual Generated Columns in Rails 8.1 At Kaigi on Rails 2025, Rails Committer Yasuo Honda delivered a deep technical walkthrough titled: Rails meets PostgreSQL 18 PostgreSQL 18 was officially released on September 25, 2025, and the talk explains how Rails adapts — not just at the marketing level, … Continue reading Rails Meets PostgreSQL 18
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