Filtered Vector Search: What ACORN Fixes, and What Fixes ACORN
Benchmark filtered vector search in Qdrant: how ACORN, filterable HNSW, and query planning trade recall for latency on one million points.
Dylan Couzon & Meina Ghafouri
August 07, 2026
Qdrant Internals
Take a look under the hood of Qdrant’s high-performance vector search engine. Explore the architecture, components, and design principles the Qdrant Vector Search Engine is built on.
Introducing Gridstore: Qdrant's Custom Key-Value Store
Why and how we built our own key-value store. A short technical report on our procedure and results.
Luis Cossio, Arnaud Gourlay & David Myriel
February 05, 2025
Immutable Data Structures in Qdrant
Learn how immutable data structures improve vector search performance in Qdrant.
Andrey Vasnetsov
August 20, 2024
Faster Disk I/O for Vector Search Using io_uring
Slow disk decelerating your Qdrant deployment? Get on top of IO overhead with this one trick!
Andre Bogus
June 21, 2023
Filterable HNSW Without Recall Loss
How to make ANN search with custom filtering? Search in selected subsets without losing the results.
Andrei Vasnetsov
November 24, 2019