Nginx performance tips using ngx pagespeed - The NetDNA Blog
blog.maxcdn.com/blogredirect/nginx-performance-tips-with-the-google-pagespeed-team
From the page
Saved with the link. Notes from 2007 to 2016 are mostly the page's own words, so this is probably an excerpt.
Today, wed like to share a few lessons weve learned while testing the ngx_pagespeed module developed by the Googles PageSpeed team.