--- title: meilisearch/arroy: Annoy-inspired Approximate Nearest... description: Arroy is a Rust library for searching vectors in space that are close to a given query vector. It is based on LMDB and is optimized for memory usage. It is... canonical: https://daily.dev/posts/meilisearch-arroy-annoy-inspired-approximate-nearest-neighbors-in-rust-based-on-lmdb-and-optimized-zyxzsfdun twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: meilisearch/arroy: Annoy-inspired Approximate Nearest Neighbors in Rust, based on LMDB and optimized for memory usage :boom: | daily.dev og:description: Arroy is a Rust library for searching vectors in space that are close to a given query vector. It is based on LMDB and is optimized for memory usage. It is... og:url: https://daily.dev/posts/meilisearch-arroy-annoy-inspired-approximate-nearest-neighbors-in-rust-based-on-lmdb-and-optimized-zyxzsfdun og:image: https://api.daily.dev/og/posts/zyXzsfdun.png og:image:alt: meilisearch/arroy: Annoy-inspired Approximate Nearest Neighbors in Rust, based on LMDB and optimized for memory usage :boom: 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. # meilisearch/arroy: Annoy-inspired Approximate Nearest Neighbors in Rust, based on LMDB and optimized for memory usage :boom: **[Lobsters](https://daily.dev/sources/lobsters)** · 4 min read · 1 upvotes · 0 comments ## Summary Arroy is a Rust library for searching vectors in space that are close to a given query vector. It is based on LMDB and is optimized for memory usage. It is useful for finding nearest neighbors and can be used by multiple processes simultaneously. The library has additional features compared to Annoy, but also has some missing features like multithreading and Python support. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: --- Tags: [#meilisearch](https://daily.dev/tags/meilisearch), [#rust](https://daily.dev/tags/rust) [View this post on daily.dev](https://daily.dev/posts/meilisearch-arroy-annoy-inspired-approximate-nearest-neighbors-in-rust-based-on-lmdb-and-optimized-zyxzsfdun) ```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":"meilisearch/arroy: Annoy-inspired Approximate Nearest Neighbors in Rust, based on LMDB and optimized for memory usage :boom:","url":"https://daily.dev/posts/meilisearch-arroy-annoy-inspired-approximate-nearest-neighbors-in-rust-based-on-lmdb-and-optimized-zyxzsfdun","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/meilisearch-arroy-annoy-inspired-approximate-nearest-neighbors-in-rust-based-on-lmdb-and-optimized-zyxzsfdun"},"datePublished":"2023-12-01T18:49:17.951Z","dateModified":"2025-09-06T02:41:07.205Z","description":"Arroy is a Rust library for searching vectors in space that are close to a given query vector. 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