title: What is the difference between both proxy_read_timeout and fastcgi_read_timeout?
body: <p>... when Nginx acts as a front end to PHP-FPM?</p>
  
  <p>Nginx is a proxy and PHP is served via fastcgi... so, do both apply?</p>
  
  <p>Background:
  Nginx reported a lot of timeouts, as the response from PHP-FPM took too long, so I have to figure out which value I have to increase.</p>