System Component Overview

1. React: The frontend application accessed by the user, which sends HTTP requests and receives responses in JSON format.
2. Nginx: Acts as a reverse proxy, forwarding requests from React to the backend (FastAPI) and returning the response to the frontend.
3. FastAPI: The backend API server that processes requests, fetches necessary data from the S3 storage or external services, and returns content to Nginx.
4. S3: Amazon S3 (Simple Storage Service) is used to store content and configuration data fetched by the system for use in API responses and other backend tasks.
5. Chat-GPT4o: A service or engine responsible for fetching configuration and initiating AI model generation through AWS Lambda.
6. Lambda: A serverless computing service that runs the AI model (likely GPT-based) through Gemini, generates data, and stores it in a vector database like Milvus.
7. Milvus: A vector database where AI-generated data and similar search results are stored, supporting efficient queries and retrieval based on semantic similarity.

Sequence Flow Explanation

1. Request from React to Nginx:
   • The user interacts with the React frontend, which sends an HTTP request (GET or POST) to the Nginx server.
2. Nginx as a Reverse Proxy to FastAPI:
   • Nginx forwards the request to the FastAPI backend, functioning as a reverse proxy. FastAPI handles the business logic based on the incoming request.
3. FastAPI Fetching Data from Milvus:
   • FastAPI processes the request and queries the Milvus vector database to fetch the required data, such as vectors or similar search results, based on semantic similarity.
4. Storing Generated Data in Milvus:
   • Lambda functions handle the AI-generated data and store it in Milvus for future semantic search and retrieval. This process is not in real-time.
5. Request for Recent Articles or Similar Search Results:
   • FastAPI or a related service sends a query to Milvus, requesting recent articles or content based on similarity. Milvus responds with the relevant data.
6. Returning the Response:
   • FastAPI processes the retrieved content from Milvus, prepares a response, and sends it to Nginx.
7. 200 OK Response:
   • Nginx forwards the JSON response back to the React frontend, completing the request cycle. The frontend updates the UI with the received data.