Milvus AGENT

Vector database built for billion-scale similarity search. Reach for it when Chroma or Qdrant hit a ceiling and you need distributed storage.

Milvus (Apache-2.0) is the vector DB you move to when a single-node store runs out of road. Supports multiple ANN index types (HNSW, IVF, DiskANN), GPU acceleration, hybrid search over vectors + scalar filters, and distributed deploy on k8s.

Who uses it: platform teams running vector search as a shared service, enterprise RAG deployments with multi-tenant isolation, and image/multimodal search at scale. Standalone deploy fits in one Compose file for prototypes. Alternatives: Qdrant (simpler ops, excellent filtering), Weaviate (built-in modules for embedding + reranking), pgvector (if a database upgrade beats a new system).

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