New for Ruby 3.4: Modular Garbage Collection and MMTk (opens in new tab)

This is very exciting - important foundational work to underpin Ruby performance improvements.

Thank you for all the effort!

This post describes the new modular garbage collection feature in Ruby 3.4: The ability to override Ruby's GC at runtime. We also introduce our first concrete alternative GC implementation, based on the Memory Management Toolkit (MMTk).