default.conf

# Change YOUR_TOKEN to your prerender token
# Change example.com (server_name) to your website url
# Change /path/to/your/root to the correct value
server {
    listen 80;
    server_name YOUR_DOMAIN.COM;
    root   /usr/share/nginx/html;
    index  index.html index.htm;
    location / {
        try_files $uri @prerender;
    }
    location @prerender {
				# When you register in prerenderio, you will get a token
        proxy_set_header X-Prerender-Token YOUR_OWN_TOKEN;
				# Check the header
        set $prerender 0;
        if ($http_user_agent ~* "googlebot|bingbot|yandex|baiduspider|twitterbot|facebookexternalhit|rogerbot|linkedinbot|embedly|quora link preview|showyoubot|outbrain|pinterest\\/0\\.|pinterestbot|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 $prerender 0;
        }
        #resolve using Google's DNS server to force DNS resolution and prevent caching of IPs
        resolver 8.8.8.8;
				# If header come from Facebook/ Scrapper, redirect to prerender.io
        if ($prerender = 1) {
            #setting prerender as a variable forces DNS resolution since nginx caches IPs and doesnt play well with load balancing
            set $prerender "service.prerender.io";
            rewrite .* /$scheme://$host$request_uri? break;
            proxy_pass <http://$prerender>;
        }
				# If the header come from normal user, redirect to cdn
				# you may also direct to local html file too
        if ($prerender = 0) {
            set $prerender "YOUR_CDN_DOMAIN.com";
            proxy_pass <http://$prerender>;
            #return 301 https://blog.club.com$request_uri;
            #rewrite ^/(.*)$ <http://testingapp.tosgame.com$1> permanent;
            #return 301 http://testingapp.tosgame.com$request_uri;
        }
    }
}