Java · Spring DevPro

Building RAG with Spring AI and Pinecone (Cloud Solution)

18 December 2025·1859 words·9 mins

Spring AI Cloud Architecture Spring Boot RAG Pinecone Vector Database OpenAI Java Generative AI

We explore how to bridge the gap between your private enterprise data and Large Language Models (LLMs) using Spring AI. This tutorial covers the end-to-end implementation of a RAG architecture, utilizing Pinecone as a managed cloud vector store for high-performance context retrieval.

Spring AI + PostgreSQL pgvector: Low-Cost RAG Solution

16 December 2025·1820 words·9 mins

Spring AI Architecture Spring AI PostgreSQL Pgvector RAG GenAI Java Vector Database Backend Development

Why buy a specialized Vector DB when you already have PostgreSQL? This deep dive explores how to implement a cost-effective, production-grade RAG architecture using Spring AI’s PgvectorVectorStore, covering setup, HNSW indexing strategies, metadata filtering, and full implementation details.

Vector Database Comparison: Pinecone vs Milvus vs pgvector

13 December 2025·1779 words·9 mins

Spring AI Architecture Vector Database RAG Pinecone Milvus PostgreSQL Java Spring Boot GenAI

Selecting the right vector store is the critical architectural decision in building RAG applications. This guide compares the three market leaders—Pinecone (SaaS), Milvus (Cloud-native), and pgvector (PostgreSQL extension)—specifically through the lens of Spring AI integration, configuration, and long-term operational costs.

What is RAG? A Complete Guide for Spring Developers

11 December 2025·2042 words·10 mins

Spring AI Tutorials Spring Ai Rag RAG LLM Java Vector Database GenAI Spring Boot

Master the architecture of RAG in the Java ecosystem. This guide covers the theory, the Spring AI abstractions, vector database integration, and a step-by-step implementation of a document-chat system.

Error Handling and Retry Strategies in Spring AI Applications

6 December 2025·1375 words·7 mins

Spring AI Backend Engineering Spring AI Error Handling Resilience4j Microservices LLM Ops Java Retry Patterns

Integrating LLMs into production systems introduces unique instability challenges. This guide explores advanced error handling patterns in Spring AI, covering exponential backoff, circuit breakers, structured output recovery, and multi-model fallback strategies to ensure enterprise-grade reliability.

Spring AI Function Calling Tutorial: Build Your First AI Agent

24 November 2025·1683 words·8 mins

Spring AI Tutorials Spring AI Function Calling Java OpenAI LLM Agents Spring Boot 3 Generative AI

Large Language Models are powerful but isolated from the real world. This tutorial bridges that gap using Spring AI Function Calling. We walk through the architecture, configuration, and code required to transform a standard chatbot into an intelligent Agent capable of executing code and retrieving live data.

Spring AI Prompt Engineering: Best Practices and Templates

5 November 2025·1383 words·7 mins

Spring AI Prompt Engineering Spring AI Java LLM PromptTemplate GenAI Best Practices Backend Development

Moving beyond simple strings: How to engineer robust, type-safe, and secure prompts using Spring AI’s PromptTemplate and BeanOutputParser for enterprise Java applications.

OpenAI Integration with Spring AI: GPT-4, Embeddings & Streaming

18 October 2025·1781 words·9 mins

Spring AI Spring Boot Spring Ai Openai GPT-4 LLM Java RAG Vector Database Reactive Programming GenAI

Master the Spring AI abstraction layer to build production-ready GenAI applications. This guide covers the full lifecycle of OpenAI integration: from basic chat completions and prompt templates to reactive streaming with Flux, generating vector embeddings, and mapping AI responses to Java Records.