{"type": "article", "title": "RAG Architecture with n8n + PostgreSQL (pgvector) + Ollama Gemma4 on AWS EC2", "publisher": "Web Pulse", "url": "https://wpnews.pro/news/rag-architecture-with-n8n-postgresql-pgvector-ollama-gemma4-on-aws-ec2", "original_source": "https://dev.to/fernando77/rag-architecture-with-n8n-postgresql-pgvector-ollama-gemma4-on-aws-ec2-1ke", "published": "2026-05-22T21:31:12+00:00", "accessed": "2026-07-07", "id": "rag-architecture-with-n8n-postgresql-pgvector-ollama-gemma4-on-aws-ec2"}