Spring AI and Pgvector enable native hybrid search in PostgreSQL

This article details how to implement native hybrid search within PostgreSQL using the pgvector extension and Spring AI. It advocates for consolidating search functionalities into a single database, eliminating the need for separate Elasticsearch clusters and the associated synchronization issues. The approach involves storing both dense and sparse vector embeddings in PostgreSQL and performing hybrid queries with Reciprocal Rank Fusion (RRF) directly within the database. AI

IMPACT Simplifies RAG pipelines by consolidating search into PostgreSQL, reducing infrastructure complexity and sync lag.

RANK_REASON Article describes a technical implementation using existing tools for a specific use case.

Read on dev.to — LLM tag →

• Elasticsearch
• pgvector
• PostgreSQL
• Reciprocal Rank Fusion
• SPLADE
• Spring AI

• product
• infra

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