I wrote about some of my thoughts on the lessons we can learn from the RubyGems situation and how we can move forward. blog.peterzhu.ca/open-source-...

I tried to explain why I don't believe the recent accusations toward my former teammates, as well as how the Ruby and Rails Infra team at Shopify operates and why it can be trusted. byroot.github.io/opensource/r...

I’m excited to share that I’m starting as a Staff Developer at Figma!

Friday was my last day of an incredible journey at Shopify. In the past 5 years, I had the privilege of working on some cutting edge projects to advance Ruby with some of the most talented and well-known developers. Shopify will always have a very special place in my heart.

Shopify sponsors and collaborates with academia to take Ruby to new heights. We're working with Australian National University to integrate Memory Management Toolkit into Ruby. Earlier this year, we published a paper about it. Today, we wrote a blog post: railsatscale.com/2025-09-16-r...

My #RailsWorld talk recording is up! youtu.be/9r0xmX0oK5Y?...

Honored to give a talk at #RailsWorld again, on the same stage 2 years later. The recording should be up in a few weeks but you can find the slides here in the meantime: blog.peterzhu.ca/assets/rails...

Excited for my Rails World talk on Friday! #railsworld

At the ISMM conference today we presented our paper about our contributions to Ruby’s garbage collector. This was the result of a multi-year collaboration between researchers at the Australian National University and Shopify. Read it here: blog.peterzhu.ca/assets/ismm_...

I just published "Implementing Embedded TypedData Objects" about a feature @byroot.bsky.social and I worked on for Ruby 3.3. A bit late, but better than never. railsatscale.com/2025-06-03-i...

My RubyKaigi talk recording is up on YouTube! youtube.com/watch?v=04ax...

Excited to be giving a talk at Rails World this year! rubyonrails.org/world/2025/d...

If you missed it, my recent #rubykaigi talk “Modular Garbage Collectors in Ruby” covered: ⚙️ Features the current Ruby GC lacks 🔄 Implementation of the Modular GC feature in Ruby 3.4 🔨 What MMTk is and the integration with Modular GC The recording will be up in a few months!

Thanks for coming to my talk at @rubykaigi today. My slides are available at blog.peterzhu.ca/assets/rubyk... We’re also hiring Ruby and Rails developers at Shopify! www.shopify.com/careers

Come to my #rubykaigi talk today at 3:40 to look at the modular garbage collectors feature in Ruby 3.4. We’ll discuss what it is, how it’s implemented, and how we’re implementing MMTk using modular GC. Hope to see you there! rubykaigi.org/2025/present...

New PC day!

Your proposal for RubyKaigi 2025 has been accepted See you on Matsuyama!

Merry Christmas everyone! Ruby 3.4 ships with Modular GC, an experimental feature we're actively working on. Modular GC provides an API for GC implementations and allows you to switch garbage collectors at boot time. For more details, see github.com/ruby/ruby/bl...