Topic

#Engineering

5 articles on this topic.

System architecture of GeoSmart showing upstream DuckDB spatial enrichment and Qdrant multi-variable continuous decay scoring

Qdrant Geospatial Search: Fix the Boundary Cliff with Decay

We replaced Qdrant geo_radius hard filters with GaussDecay and ExpDecay on 8,317 Berlin stays. Ring loss 37% to 0% in 8.1 ms. Code, data, and the 10-persona eval are on GitHub.

Sep 3, 202611 min readRead

Diagram of JurisBoost single query_points call with RRF prefetch, ColBERT rescore, and statutory FormulaQuery

QdrantVector SearchRAG

Qdrant Hybrid Search for Legal RAG Tested on 2,034 Cases

We ran Qdrant hybrid search (RRF + ColBERT + FormulaQuery) on 2,034 Supreme Court precedents. Top-1 went from 31.8% to 86.4%. Code, data, and the 22-query eval are on GitHub.

Sep 2, 202616 min readRead

Editorial diagram of a shared Qdrant collection mixing twelve tenant vocabularies into global IDF, then scoping params.idf.corpus to one tenant

QdrantBM25Vector Search

Qdrant 1.19 Per-Tenant IDF: Ranking Changes, Not nDCG

We ran Qdrant 1.19 per-tenant IDF on 457k CQADupStack docs. Top-1 changed on 20% of queries. Labeled nDCG barely moved. Methodology, numbers, and the API.

Aug 22, 202615 min readRead

An elegant architectural diagram showing QQL query transformation through JWT validation, rate limiting, and AST-level filter injection before executing on Qdrant.

QdrantSecurityEngineering

Stop Cross-Tenant RAG Leaks Before Qdrant Runs the Search

Qdrant trusts the client filter. Inject tenant predicates into the query AST so agents cannot skip isolation, even under prompt injection.

Jun 20, 202613 min readRead

Terminal-driven retrieval operations pipeline with QQL scripts, JSON artifacts, CI checks, and vector search diagnostics

RAGEngineeringAI Agents

Query Qdrant From the CLI Without Writing SDK Code

qql-go is archived. Use the qql CLI from qql-rs for CI, runbooks, and agent-safe Qdrant retrieval. This post is the original design.

May 17, 202612 min readRead

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