Building Semantic Search with Spring Boot, PostgreSQL, and pgvector (RAG Retrieval)

📰 Dev.to · Allan Roberto

Learn to build semantic search with Spring Boot, PostgreSQL, and pgvector for efficient RAG retrieval

intermediate Published 15 Mar 2026
Action Steps
  1. Build a Spring Boot application to handle document indexing
  2. Configure PostgreSQL database to store document embeddings
  3. Install and configure pgvector for efficient vector similarity search
  4. Implement RAG retrieval using the built indexing pipeline
  5. Test the semantic search functionality with sample queries
Who Needs to Know This

Developers and data engineers can benefit from this tutorial to improve their search functionality in applications, especially those working with knowledge bases or document retrieval systems.

Key Insight

💡 Using pgvector with PostgreSQL enables efficient vector similarity search, crucial for semantic search and RAG retrieval

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🚀 Build semantic search with Spring Boot, PostgreSQL, and pgvector for efficient RAG retrieval! 🚀

Full Article

In the previous article, we built the indexing pipeline for our knowledge base: documents are...
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