Vector Database Showdown: pgvector, Pinecone, Qdrant, Weaviate, Milvus

A developer guide compares five vector databases for RAG workloads, advising teams to choose based on existing infrastructure rather than benchmarks. pgvector suits Postgres users under 50M vectors, while Pinecone offers managed simplicity. For speed, Qdrant; for hybrid search, Weaviate; and for billion-scale, Milvus.