When using FalkorDB (a Redis-protocol-compatible graph database) for GraphRAG or semantic search, we often want to tap into its built-in native vector search capability, namely this API:

CALL db.idx.vector.queryNodes('Entity', 'embedding', 10, vecf32($query_vec))

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The dream is beautiful: a single Cypher statement fetches "the 10 nodes most similar to the query vector," backed by efficient Approximate Nearest Neighbor (ANN) search.