nginx-frontendsupport

# cache directive for all static apps
  index index.html;
  ssl_certificate /etc/nginx/ssl/ssl-bundle.crt;
  ssl_certificate_key /etc/nginx/ssl/star.quezx.com.key;

  # maintenance mode if file maintenance_on.html present
  if (-f $document_root/maintenance_on.html) {
    return 503;
  }
  error_page 503 @maintenance;

  location @maintenance {
    rewrite ^(.*)$ /maintenance_on.html break;
  }

  # cache.appcache, your document html and data
  location ~* \.(?:manifest|appcache|html?|xml|json)$ {
    expires -1;
  }

  # Media: images, icons, video, audio, HTC
  location ~* \.(?:jpg|jpeg|gif|png|ico|cur|gz|eot|otf|woff|woff2|ttf|svg|svgz|mp4|ogg|ogv|webm|htc)$ {
    expires 1M;
    access_log off;
    add_header Cache-Control "public";
  }

  # CSS and Javascript
  location ~* \.(?:css|js)$ {
    expires 1y;
    access_log off;
    add_header Cache-Control "public";
  }

  location / {
    #if ($args !~* _v=110917) {
    #  return 301 https://$server_name$uri?_v=110917&$args;
    #}

    #try_files $uri $uri/ /index.html;
    try_files $uri $uri/ @prerender;
    expires -1;
  }

location @prerender {
        #proxy_set_header X-Prerender-Token YOUR_TOKEN;

        set $prerender 0;
        if ($http_user_agent ~* "googlebot|bingbot|yandex|baiduspider|twitterbot|facebookexternalhit|rogerbot|linkedinbot|embedly|quora link preview|showyoubot|outbrain|pinterest|slackbot|vkShare|W3C_Validator"){
            set $prerender 1;
        }
	if ($args ~ "_escaped_fragment_") {
            set $prerender 1;
        }
	if ($http_user_agent ~ "Prerender") {
            set $prerender 0;
        }
	if ($uri ~* "\.(js|css|xml|less|png|jpg|jpeg|gif|pdf|doc|txt|ico|rss|zip|mp3|rar|exe|wmv|doc|avi|ppt|mpg|mpeg|tif|wav|mov|psd|ai|xls|mp4|m4a|swf|dat|dmg|iso|flv|m4v|torrent|ttf|woff|svg|eot)") {
            set $prerender 0;
        }

	#resolve using Google's DNS server to force DNS resolution and prevent caching of IPs
       #resolver 8.8.8.8;

        if ($prerender = 1) {

            #setting prerender as a variable forces DNS resolution since nginx caches IPs and doesnt play well with load balancing
            #set $prerender "localhost:3200";
            rewrite .* /$scheme://$host$request_uri? break;
            proxy_pass http://127.0.0.1:3000;
        }

	if ($prerender = 0) {
            rewrite .* /index.html break;
        }
    }