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Rewriting the Ruby parserAt Shopify, we have spent the last year writing a new Ruby parser, which we’ve called YARP (Yet Another Ruby Parser). As of the date of this post, YARP can parse a semantically equivalent syntax tree to Ruby 3.3 on every Ruby file in Shopify’s main codebase, GitHub’s main codebase, CRuby, and the 100 most popular gems downloaded from rubygems.org. We recently got approval to merge this work into CRuby, and are very excited to share our work with the community. This post will take you through... 2023-06-11T17:00:00-0700 Rails at Scale 5,000 words Rated 2023-06-13T16:37:24-0700 - sethherr
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Tiny JITs for a Faster FFICan we have a faster FFI for CRuby? Yes. 2025-02-11T16:00:00-0800 Rails at Scale Aaron Patterson 2,000 words Rated 2025-02-12T15:26:07-0800 - sethherr
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Ruby Outperforms C: Breaking the Catch-22YJIT’s ability to improve performance by adapting to run-time behavior can increase the speed of our code in a way that dropping down to C can’t. As such, I think we should reconsider the common wisdom that “rewriting our Ruby in C” is the ideal path to performance optimization and take a serious look at “rewriting our C in Ruby” instead. 2023-08-28T17:00:00-0700 Rails at Scale Aaron Patterson 3,000 words Rated 2025-02-12T21:06:10-0800 - sethherr
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