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RubyKaigi 2025

Matsuyama, Ehime, Japan • April 16-18, 2025

rubykaigi.org/2025
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RubyKaigi is a yearly conference and features 70 talks from various speakers, including keynotes by Mari Imaizumi, Ivo Anjo, and Yukihiro "Matz" Matsumoto.

Talks Speakers Schedule

Day 2 - Thursday (Apr 17, 2025)

10:00 - 11:00
Main Hall #rubykaigiA
 
Keynote: Performance Bugs and Low-level Ruby Observability APIs

Ivo Anjo
11:10 - 11:40
Main Hall #rubykaigiA
 
Dissecting and Reconstructing Ruby Syntactic Structures

Yudai Takada
Sub Hall #rubykaigiB
 
Benchmark and profile every single change

Daisuke Aritomo
Pearls Room #rubykaigiC
 
Running JavaScript within Ruby

Kengo Hamasaki
11:50 - 12:20
Main Hall #rubykaigiA
 
ZJIT: Building a Next Generation Ruby JIT

Maxime Chevalier-Boisvert
Sub Hall #rubykaigiB
 
Keeping Secrets: Lessons Learned From Securing GitHub

Dennis Pacewicz, Wei Lin Ngo
Pearls Room #rubykaigiC
 
Improvement of REXML and speed up using StringScanner

NAITOH Jun
12:20 - 14:00
Lunch Break
14:00 - 14:30
Main Hall #rubykaigiA
 
Writing Ruby Scripts with TypeProf

Yusuke Endoh
Sub Hall #rubykaigiB
 
Demystifying Ruby Debuggers: A Deep Dive into Internals

Dmitry Pogrebnoy
Pearls Room #rubykaigiC
 
How to make the Groovebox

Yuya Fujiwara
14:40 - 15:10
Main Hall #rubykaigiA
 
MicroRuby: True Microcontroller Ruby

Hitoshi Hasumi
Sub Hall #rubykaigiB
 
Bazel for Ruby

Alex Rodionov
Pearls Room #rubykaigiC
 
RuboCop: Modularity and AST Insights

Koichi ITO
15:10 - 15:40
Afternoon Break
15:40 - 16:10
Main Hall #rubykaigiA
 
Speeding up Class#new

Aaron Patterson
Sub Hall #rubykaigiB
 
You Can Save Lives With End-to-end Encryption in Ruby

Ryo Kajiwara
Pearls Room #rubykaigiC
 
Write you a Barrier - Automatic Insertion of Write Barriers

Martin J. Dürst, Joichiro Okoshi
16:20 - 16:50
Main Hall #rubykaigiA
 
Making TCPSocket.new 'Happy'!

Misaki Shioi
Sub Hall #rubykaigiB
 
From C extension to pure C: Migrating RBS

Alexander Momchilov
Pearls Room #rubykaigiC
 
The Implementations of Advanced LR Parser Algorithm

Junichi Kobayashi
17:00 - 18:00
Main Hall #rubykaigiA
 
Lightning Talks

Shunsuke Michii, makicamel, White-Green, Yudai Takada, Chris Hasinski, Taketo Takashima, Kazuhiro NISHIYAMA, Hayao Kimura, Shugo Maeda, Ryo Ishigaki, Taiga ASANO, TODO