--- title: Look ma, I wrote a new JIT compiler for PostgreSQL –... description: A developer shares their experience building a new JIT compiler for PostgreSQL, using the copy-and-patch methodology. They discuss the limitations of using... canonical: https://daily.dev/posts/look-ma-i-wrote-a-new-jit-compiler-for-postgresql-pinaraf-s-website-y9mjsuv4t twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Look ma, I wrote a new JIT compiler for PostgreSQL – Pinaraf's website | daily.dev og:description: A developer shares their experience building a new JIT compiler for PostgreSQL, using the copy-and-patch methodology. They discuss the limitations of using... og:url: https://daily.dev/posts/look-ma-i-wrote-a-new-jit-compiler-for-postgresql-pinaraf-s-website-y9mjsuv4t og:image: https://api.daily.dev/og/posts/Y9mjSUv4T.png og:image:alt: Look ma, I wrote a new JIT compiler for PostgreSQL – Pinaraf's website og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Look ma, I wrote a new JIT compiler for PostgreSQL – Pinaraf's website **[Hacker News](https://daily.dev/sources/hn)** · 9 min read · 2 upvotes · 0 comments ## Summary A developer shares their experience building a new JIT compiler for PostgreSQL, using the copy-and-patch methodology. They discuss the limitations of using LLVM as a JIT compiler and explain how copy-and-patch provides a faster and more efficient alternative. The developer also provides benchmarks comparing the performance of the JIT engine to the PostgreSQL interpreter. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: --- Tags: [#cpython](https://daily.dev/tags/cpython), [#general-programming](https://daily.dev/tags/general-programming), [#performance](https://daily.dev/tags/performance), [#postgresql](https://daily.dev/tags/postgresql) [View this post on daily.dev](https://daily.dev/posts/look-ma-i-wrote-a-new-jit-compiler-for-postgresql-pinaraf-s-website-y9mjsuv4t) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Look ma, I wrote a new JIT compiler for PostgreSQL – Pinaraf's website","url":"https://daily.dev/posts/look-ma-i-wrote-a-new-jit-compiler-for-postgresql-pinaraf-s-website-y9mjsuv4t","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/look-ma-i-wrote-a-new-jit-compiler-for-postgresql-pinaraf-s-website-y9mjsuv4t"},"datePublished":"2024-03-18T12:44:25.490Z","dateModified":"2026-03-15T05:16:57.679Z","description":"A developer shares their experience building a new JIT compiler for PostgreSQL, using the copy-and-patch methodology. 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