research(nightly): coherence-gated multi-tenant vector namespace router#545
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research(nightly): coherence-gated multi-tenant vector namespace router#545ruvnet wants to merge 4 commits into
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Introduces crates/ruvector-namespace-router with three variants: FlatIsolated (strict per-namespace scan), CentroidRouted (centroid pruning with configurable probe), CoherenceGated (coherence threshold gating with WitnessLog audit). All 16 tests pass; recall@10=1.000 for all variants on N=4,000 D=128 benchmark.
Documents the NamespaceIndex trait design, three variant trade-offs, benchmark evidence, failure modes, security considerations, and migration path. Status: accepted.
…ace-router Research doc covers 2026 SOTA multi-tenant vector isolation survey, 10-20 year forward thesis, full benchmark methodology, real measured results, practical and exotic applications, and production hardening roadmap. Gist includes comparison table against Milvus, Qdrant, Weaviate, Pinecone, LanceDB, FAISS, pgvector, Chroma, Vespa.
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Nightly RuVector Research — 2026-06-07
coherence-gated-namespace-router
Adds the retrieval-layer isolation primitive that multi-agent RuVector deployments need: a multi-tenant vector namespace router with three variants of increasing semantic awareness, a coherence-based federation gate, and a tamper-evident witness log for cross-boundary access events.
What's included
Working Rust PoC —
crates/ruvector-namespace-routerFlatIsolated: strict per-namespace linear scan (zero cross-namespace visibility)CentroidRouted: centroid-pruned namespace selection with configurableprobedepthCoherenceGated: coherence threshold τ gates cross-namespace results +WitnessLogauditnamespace-bench)ADR —
docs/adr/ADR-196-coherence-namespace-router.mdResearch document —
docs/research/nightly/2026-06-07-coherence-namespace-router/README.mdSEO gist —
docs/research/nightly/2026-06-07-coherence-namespace-router/gist.mdReal benchmark results
All numbers from
cargo run --release -p ruvector-namespace-router, Intel Celeron N4020, x86-64, Linux 6.18.5, rustc 1.94.1. N=4,000 (8 namespaces × 500 vectors), D=128, 1,600 queries, K=10.ACCEPTANCE: PASS — all variants recall@10 ≥ 0.99
CoherenceGated adds ~7.8% latency overhead over FlatIsolated for coherence computation + witness log infrastructure.
Ecosystem connections
Research doc:
docs/research/nightly/2026-06-07-coherence-namespace-router/README.mdADR:
docs/adr/ADR-196-coherence-namespace-router.mdGist:
docs/research/nightly/2026-06-07-coherence-namespace-router/gist.mdGenerated by Claude Code