🧠 Pluggable Garbage Collectors in Ruby: Exploring the New Modular GC API

February 23, 2026

Ruby has traditionally shipped with a single, built-in garbage collector tightly coupled to the VM. With Ruby 3.4, that assumption begins to change.

Feature #20470 introduces an experimental Modular Garbage Collector API , allowing CRuby to load alternative GC implementations at runtime. This marks one of the most significant architectural shifts in Ruby’s memory management since the introduction of generational GC.

Instead of a fixed collector, Ruby is moving toward a future where garbage collection becomes a replaceable component.

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👉 Read the full article.

https://rubystacknews.com/2026/02/23/%f0%9f%a7%a0-pluggable-garbage-collectors-in-ruby-exploring-the-new-modular-gc-api/

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