ChatQnA is one of the GenAI examples. It is a chatbot for question and answer through retrieval augmented generation (RAG). All details about the sample are available at https://github.com/opea-project/GenAIExamples/tree/main/ChatQnA.

This example uses Postgres database with pgvector plug-in as a microservice. There is a need to show how OpenSearch service can be used instead of the built-in vector database. Any of the deployment mechanisms (Docker Compose, Amazon EKS, or AWS Fargate) can be used.