FastAPI Deployment Basic production deployment setup for FastAPI applications. ## Usage ``bash # Run with Uvicorn uvicorn app.main:app --host 0.0.0.0 --port 8000 --workers 4 # Docker deployment docker build -t fastapi-app . docker run -p 8000:8000 fastapi-app ` ## Production Configuration `python # app/core/config.py from pydantic import BaseSettings import os class Settings(BaseSettings): """Production settings.""" # App PROJECT_NAME: str = "FastAPI App" VERSION: str = "1.0.0" SECRET_KEY: str = os.getenv("SECRET_KEY", "dev-key") # Server HOST: str = "0.0.0.0" PORT: int = 8000 WORKERS: int = 4 # Database DATABASE_URL: str = os.getenv("DATABASE_URL", "sqlite:///./app.db") # Redis REDIS_URL: str = os.getenv("REDIS_URL", "redis://localhost:6379") class Config: env_file = ".env" settings = Settings() ` ## Docker Setup `dockerfile # Dockerfile FROM python:3.11-slim WORKDIR /app # Install dependencies COPY requirements.txt . RUN pip install --no-cache-dir -r requirements.txt # Copy app COPY . . # Create non-root user RUN useradd -m appuser && chown -R appuser:appuser /app USER appuser EXPOSE 8000 # Health check HEALTHCHECK CMD curl -f http://localhost:8000/health || exit 1 CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8000"] ` ## Docker Compose `yaml # docker-compose.yml version: '3.8' services: app: build: . ports: - "8000:8000" environment: - DATABASE_URL=postgresql://user:pass@db:5432/fastapi_db - REDIS_URL=redis://redis:6379 depends_on: - db - redis db: image: postgres:15 environment: POSTGRES_DB: fastapi_db POSTGRES_USER: user POSTGRES_PASSWORD: password volumes: - postgres_data:/var/lib/postgresql/data redis: image: redis:7-alpine volumes: - redis_data:/data volumes: postgres_data: redis_data: ` ## Environment Variables `bash # .env SECRET_KEY=your-secret-key DATABASE_URL=postgresql://user:pass@localhost/fastapi_db REDIS_URL=redis://localhost:6379 ` ## Health Check `python # app/api/health.py from fastapi import APIRouter from app.core.config import settings router = APIRouter() @router.get("/health") async def health_check(): return { "status": "healthy", "version": settings.VERSION } ` ## Deployment Script `bash #!/bin/bash # deploy.sh set -e echo "Deploying FastAPI app..." # Build and deploy docker-compose build docker-compose up -d # Health check echo "Checking health..." if curl -f http://localhost:8000/health; then echo "✅ Deployment successful!" else echo "❌ Deployment failed!" exit 1 fi ``