Why is my server response time over 400 ms for a fully cached site?

[Quintin Par]

Cross-posted at Stackoverflow
<https://serverfault.com/questions/936873/nginx-optimizing-server-response-time-for-a-http-cached-website>



I have a website with all of the pages served from nginx’s http cache and
rarely invalidated or expired.

The average total page download size is around 2 MB But despite being a
static site with no funny logic my server response is around a second



https://d.pr/NUxu2a



I recorded nginx’s $request_time and it comes to around 400 milliseconds
from the server



https://d.pr/HGhZZy



and each file at 20-30 KB average



https://d.pr/kSSUkB



400 millisecond seems to be absurd.



I am behind *Cloudflare* and



sendfile        on;

tcp_nopush     off;

tcp_nodelay on;

keepalive_timeout  300s;

keepalive_requests 10000;



What should I be doing to bring down the response time to the
150-millisecond range?



- Quintin
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