Moving Beyond Semantic-Only Retrieval: Why Production RAG Systems Need Hybrid Search

Vector search alone fails to reliably retrieve exact matches for technical codes, product IDs, and specialized terminology—a critical weakness in production RAG deployments. By combining semantic vector search with keyword-based full-text search through techniques like Reciprocal Rank Fusion, teams can build retrieval systems that handle both conceptual queries and precise technical identifiers. This hybrid approach directly solves real-world RAG failures and significantly improves system reliability and user satisfaction.