Kong Nopwattanapong published a blog post with regards to Building a simple RAG chatbot with LangChain.

Nopwattanapong concluded, the model isn’t perfect and there are still many things to add to and improve the model in future. However, this will hopefully give you a basic understanding of how to create an RAG chatbot and how vector databases work.

Another example that might help you in Building an LLM and RAG-based chat application using AlloyDB AI and LangChain. In this codelab you will learn how to deploy the GenAI Databases Retrieval Service and create a sample interactive application using the deployed environment. You may explore this github repository for more code level guide in GenAI Databases Retrieval App.