https://www.nginx.com/blog/tuning-nginx/
https://www.nginx.com/blog/performance-tuning-tips-tricks/
https://www.nginx.com/blog/maximizing-php-7-performance-with-nginx-part-i-web-serving-and-caching/
https://www.nginx.com/blog/maximizing-php-7-performance-with-nginx-part-ii-multiple-servers-and-load-balancing/
https://gist.github.com/denji/8359866
https://sourcecloud.co.uk/blogs/performance-tuning-nginx-and-php-fpm-for-xenforo/
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