Reading material about NGINX:

https://github.com/denji/nginx-tuning

https://bash-prompt.net/guides/nginx-brotli-precompressed/
https://blog.cloudflare.com/hpack-the-silent-killer-feature-of-http-2/
https://blog.cloudflare.com/optimizing-tls-over-tcp-to-reduce-latency/
https://blog.tomayac.com/2020/01/24/brotli-compression-with-mod-pagespeed-and-ngx-pagespeed/
https://blog.undabot.com/how-to-boost-performance-and-technical-seo-just-by-tuning-nginx-d424c865e67f
https://calomel.org/nginx.html
https://cipherlist.eu
https://dawnbringer.net/blog/1083/TLS All The Things! Perfect ssl-labs score for Nginx
https://www.hongkiat.com/blog/nginx-rules-for-wordpress-security/
https://michael.lustfield.net/nginx/getting-a-perfect-ssl-labs-score
https://titanwolf.org/Network/Articles/Article?AID=2a3abef6-4034-4549-bfa1-e5eb9e46bf5e (jemalloc)
https://titanwolf.org/Network/Articles/Article?AID=82ab047e-b319-4f78-bffb-65c8fc81991e (AIO)
https://www.igvita.com/2013/12/16/optimizing-nginx-tls-time-to-first-byte/
https://www.nginx.com/blog/10-tips-for-10x-application-performance/
https://www.nginx.com/blog/thread-pools-boost-performance-9x/
https://www.nginx.com/blog/improving-nginx-performance-with-kernel-tls/
https://www.nginx.com/blog/optimizing-web-servers-for-high-throughput-and-low-latency/
https://www.nginx.com/resources/wiki/start/topics/tutorials/config_pitfalls/
https://www.robpeck.com/2020/06/making-webdav-actually-work-on-nginx/
https://wordpress.org/support/article/nginx/

Tools:
https://www.ssllabs.com/
https://internet.nl/
https://observatory.mozilla.org/
https://www.nginx.com/blog/regular-expression-tester-nginx/