From pidfd to Shimanami Kaido: My RubyKaigi 2025 Experience

262 days ago • 13 views • Closer to Code • mensfeld.pl

Table of Contents

  • 1 Introduction
  • 2 Pre-Conference (Day -1 & Day 0)
  • 3 The Conference Experience3.1 Day 1 - Talks and Official Party3.2 Day 2 - ZJIT and More Connections3.3 Day 3 - Ractor-local GC and Hacking Day
  • 3.1 Day 1 - Talks and Official Party
  • 3.2 Day 2 - ZJIT and More Connections
  • 3.3 Day 3 - Ractor-local GC and Hacking Day
  • 4 Post-Conference Adventures4.1 Days 4-5 - The Unofficial Adventures Begin4.2 Day 6 - The Shimanami Kaido Adventure
  • 4.1 Days 4-5 - The Unofficial Adventures Begin
  • 4.2 Day 6 - The Shimanami Kaido Adventure
  • 5 Reflections and Why RubyKaigi Matters
  • 6 Summary and Final Thoughts

Introduction

I just returned from RubyKaigi 2025, which ran from April 16th to 18th at the Ehime Prefectural Convention Hall in Matsuyama. If you're unfamiliar with it, RubyKaigi is the biggest Ruby conference, with over 1,500 people showing up this year. It's always a bit crazy (in the best way possible).

The conference had an orange theme. Ehime is famous for its oranges, and the organizers love bringing local flavor to the event.

What I love most about RubyKaigi is how it bridges the gap between the Japanese and Western Ruby worlds. Despite Ruby coming