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Speeding Up Ruby 3.4.x with YJIT + asdf

  • RFilo CTO
  • 11 de ago.
  • 1 min de leitura

I’ve been running Ruby 3.4.x with YJIT enabled, managed via asdf, and the performance boost is undeniable.

  • asdf keeps version management clean and reproducible.

  • YJIT in Ruby 3.4.x brings faster method dispatch, reduced memory allocations, and overall smoother runtime.

Real-world gains I’ve seen:

  • Rails boot time reduced noticeably.

  • Heavy jobs and background processing run up to 30–40% faster.

  • More consistent response times under load.

Enabling YJIT is as simple as:

ree

If you’re still on older Ruby versions or not using YJIT, now’s the time to try. With asdf handling your environments, upgrading is painless — and the speed gains are real.

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Hi, I'm Rodrigo Toledo

A full-stack developer skilled in both front-end and back-end development, building and maintaining web applications

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I'm always seeking to improve what I build and to refine my skills. Whenever I master something, I share it. And when I don't understand, I dive deep until I do—learning, growing, and helping others along the way.

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