[GitHub] [incubator-pagespeed-ngx] jmarantz commented on issue #1685: Pagespeed causes high FTTB on nginx

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jmarantz commented on issue #1685: Pagespeed causes high FTTB on nginx
URL: https://github.com/apache/incubator-pagespeed-ngx/issues/1685#issuecomment-613001771
 
 
   qq: with pagespeed off, is your HTML cacheable in the CDN?
   
   What drives the origin response, is there a database lookup of some sort?
   
   
   On Mon, Apr 13, 2020 at 1:24 PM Lofesa <no...@github.com> wrote:
   
   > As far as I know w/ RewriteLevel PassThrough only explicit enabled filters
   > works, and you have none enabled.
   > Whats filters have you enabled in the url?
   > In other hand when you set PageSpeed=off the "original" headers are used,
   > so if you have cache-control in place, the url is stored in the proxy
   > cache, but when you have PageSpeed=on, cache-control header is set to
   > max-age=0 and is not stored in the proxy cache.
   >
   > But the 16ms/676ms are not the TTFB, these are total time for these url.
   > For a better measure of TTFB you can use some tool like
   > https://www.webpagetest.org/ and see what this tools say in the First Byte
   >
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