Ghost performance config for nginx... handles 500 requests per second

proxy_cache_path /data/nginx/cache levels=1:2 keys_zone=STATIC:10m inactive=24h max_size=512m;

server {
  listen localhost:80;
  listen [::]:80;
  listen localhost:443 ssl;
  listen [::]:443 ssl;

  ssl_certificate /var/www/certs/fullchain.pem;
  ssl_certificate_key /var/www/certs/key.pem;

  server_name localhost.localdomain localhost;

  access_log /var/log/nginx/access.log combined;
  error_log /var/log/nginx/error.log error;

  location /content/images {
    alias /path/to/ghost/content/images;
  }

  location /assets {
    alias /path/to/ghost/content/themes/<theme>/assets;
  }

  location /public {
    alias /path/to/ghost/core/built/public;
  }

  location /ghost/scripts {
    alias /path/to/ghost/core/built/scripts;
  }

  location /ghost {
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header Host $http_host;
    proxy_pass http://127.0.0.1:2368;
    proxy_http_version 1.1;
    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection 'upgrade';
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header X-Forwarded-Proto $scheme;
    proxy_cache_bypass $http_upgrade;
  }

  location / {
    proxy_cache STATIC;
    proxy_cache_valid 200 60m;
    proxy_ignore_headers X-Accel-Expires Expires Cache-Control;
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header Host $http_host;
    proxy_pass http://127.0.0.1:2368;
    proxy_http_version 1.1;
    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection 'upgrade';
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header X-Forwarded-Proto $scheme;
    proxy_cache_bypass $http_upgrade;
  }
}