worker_processes 1;
events { worker_connections 1024; }
http {

  proxy_cache_path /opt/cache levels=1:2 keys_zone=tempi:10m max_size=1g inactive=60m use_temp_path=off;

  map $http_user_agent $agent_flag {
    default 0; # default to desktop
    ~*ipad 0;
    ~*windows\s+(?:ce|phone)|mobile|iphone 1;    
    ~*windows|linux|os\s+x\s*[\d\._]+|solaris|bsd 0; # OSes - desktop
  }


  server {
    listen 80;
    location / {
# Cache normal pages for 1 day
      proxy_cache_revalidate on;
      proxy_cache_valid 200 301 302 1d;

      # Cache 404 pages for 15 minutes
      proxy_cache_valid 404 15m;
      
      # Cache key
      proxy_cache_key "$agent_flag$scheme$request_method$host$request_uri$is_args$args";
      
      # Proxy settings
      proxy_cache tempi;
      proxy_cache_lock on;
      add_header X-Cache-Status $upstream_cache_status;
      proxy_set_header Host $host;
      proxy_ignore_headers Cache-Control;
      proxy_set_header Host $host;
      proxy_set_header X-Real-IP $remote_addr;
      proxy_pass http://landing:3000;
    }
  }
}