Simon Willison 3/13/2026

Shopify/liquid: Performance: 53% faster parse+render, 61% fewer allocations

Read Original

A detailed analysis of a Shopify/Liquid pull request where CEO Tobias Lütke used an AI-powered 'autoresearch' system to run hundreds of experiments. The result was dozens of micro-optimizations, like replacing StringScanner with byteindex and caching integer strings, leading to a 53% performance boost and 61% fewer allocations in the Ruby template engine.

Shopify/liquid: Performance: 53% faster parse+render, 61% fewer allocations

Comments

No comments yet

Be the first to share your thoughts!

Browser Extension

Get instant access to AllDevBlogs from your browser