FastAPI Deployment Guide: A Comprehensive Process from Local Development to Cloud Server Deployment

This article introduces the complete deployment process of FastAPI, from local development to cloud server deployment. First, install FastAPI and Uvicorn locally, write a simple interface (e.g., `main.py`), and test it with `uvicorn`. Next, purchase a Linux cloud server (e.g., Ubuntu), obtain information such as the IP and username, and connect remotely via SSH. The server needs to install Python 3 and dependencies, create a project directory, upload the code, generate `requirements.txt` and install dependencies. For production environment configuration, set up a systemd service, enable auto-start at boot (`fastapi.service`), and open the firewall port 8000. Nginx reverse proxy is recommended, with HTTPS configured through Certbot. After deployment, maintain the service via logs, and re-upload and restart the code when updated. For complex projects, Docker containerization deployment can be adopted. The core process: local debugging → server preparation → environment setup → service startup → security configuration → maintenance, ensuring the API stably serves external requests.