FastAPI + Uvicorn + SSL

upstream fastapi_backend {
    server 127.0.0.1:8000;
    keepalive 32;
}

# HTTP → HTTPS редирект
server {
    listen 80;
    listen [::]:80;
    server_name example.com;
    return 301 https://$host$request_uri;
}

# HTTPS сервер
server {
    listen 443 ssl http2;
    listen [::]:443 ssl http2;
    server_name example.com;

    ssl_certificate     /etc/letsencrypt/live/example.com/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/example.com/privkey.pem;
    ssl_protocols TLSv1.2 TLSv1.3;
    ssl_ciphers ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384;
    ssl_prefer_server_ciphers off;
    ssl_session_cache shared:SSL:10m;
    ssl_session_timeout 1d;

    server_tokens off;
    client_max_body_size 20m;

    access_log /var/log/nginx/fastapi-access.log combined;
    error_log  /var/log/nginx/fastapi-error.log warn;

    add_header Strict-Transport-Security "max-age=31536000; includeSubDomains; preload" always;
    add_header X-Frame-Options "SAMEORIGIN" always;
    add_header X-Content-Type-Options "nosniff" always;
    add_header X-XSS-Protection "1; mode=block" always;
    add_header Referrer-Policy "strict-origin-when-cross-origin" always;

    gzip on;
    gzip_vary on;
    gzip_comp_level 5;
    gzip_types text/plain text/css application/json application/javascript text/xml image/svg+xml;

    location /static/ {
        alias /var/www/app/static/;
        expires 30d;
        add_header Cache-Control "public, immutable";
    }

    location / {
        proxy_pass http://fastapi_backend;
        proxy_http_version 1.1;
        proxy_set_header Host              $host;
        proxy_set_header X-Real-IP         $remote_addr;
        proxy_set_header X-Forwarded-For   $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
        proxy_set_header Connection        "";
        proxy_read_timeout    120s;
        proxy_connect_timeout 30s;
        proxy_buffering on;
        proxy_buffer_size   8k;
        proxy_buffers       8 32k;
    }

    location ~ /\. {
        deny all;
    }

    error_page 500 502 503 504 /50x.html;
    location = /50x.html {
        root /usr/share/nginx/html;
    }
}