http {
  proxy_cache_path /tmp/nginx/cache
  levels=1:2
  keys_zone=main:10m
  max_size=1g inactive=1d;
  proxy_temp_path /tmp/nginx/tmp;
  
  server {
    listen 80;
    server_name app.example.com;
    rewrite ^ https://$server_name$request_uri? permanent;
  }
  
  server {
    set $cache_key $scheme$host$uri$is_args$args;
    
    listen 443;
    server_name app.example.com;
  
    ssl on;
    ssl_certificate /etc/nginx/ssl/ssl.crt;
    ssl_certificate_key /etc/nginx/ssl/ssl.key;
  
    location = /favicon.ico {
      root /home/ubuntu/app/bundle/programs/client/app;
      access_log off;
      expires 1w;
    }
  
    location ~* "^/[a-z0-9]{40}\.(css|js)$" {
      root /home/ubuntu/app/bundle/programs/client;
      access_log off;
      expires max;
    }
  
    location ~ "^/packages" {
      root /home/ubuntu/app/bundle/programs/client;
      access_log off;
    }
  
    location / {
      proxy_pass http://localhost:3000;
      proxy_http_version 1.1;
      proxy_set_header Upgrade $http_upgrade;
      proxy_set_header Connection "upgrade";
      proxy_set_header Host $host;
    }
    
    location /static {
      proxy_pass http://localhost:3000/static;
      proxy_http_version 1.1;
      proxy_set_header Upgrade $http_upgrade;
      proxy_set_header Connection "upgrade";
      proxy_set_header Host $host;
      
      proxy_cache main;
			proxy_cache_key $cache_key;
			proxy_cache_valid 1d; #time till cache goes stale
			proxy_cache_use_stale error
					  timeout
					  invalid_header
					  http_500
					  http_502
					  http_504
					  http_404;
      
      expires 365d;
      gzip on;
      gzip_min_length  1100;
      gzip_buffers  4 32k;
      gzip_types    text/plain application/x-javascript text/xml text/css;
      gzip_vary on;
    }
  }

}