Qdrant Payload Index Engine Enables Sub-Millisecond ACL Filtering
August 14, 2026
Qdrant utilizes a Rust-based payload index engine to support keyword filtering alongside vector points. This architecture enables sub-millisecond Access Control List (ACL) pre-filtering by injecting security identifiers into similarity queries before distance calculations occur.
HOW THIS AFFECTS YOU
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builderYou can implement secure RAG systems that enforce document-level permissions without a significant latency penalty.