From trees to graphs: speeding up vector search 10x with Hannoy
blog.kerollmops.com
This is a walkthrough of a new LMDB-based HNSW Rust vector store with drastically better performances than the previous random-projection-based one. This is a disk-based HNSW highly vector store inspired by the DiskANN technology and is now used by default in Meilisearch.
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The original was posted on /r/rust by /u/Kerollmops on 2025-12-08 16:13:28+00:00.

Hey Reddit 👋

It’s been a while! This morning, we published a new article about how we made Meilisearch’s semantic search much faster with hannoy. Hannoy is a new LMDB disk-based HNSW vector store that is much more performant. Now, it’s the default backend in Meilisearch!

Please ask any questions about the post 👀