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High response times (cache hits) for static file caching

Posted by newbeenginx 
High response times (cache hits) for static file caching
August 09, 2018 11:09AM
We have a freshly installed Nginx server, setup as proxy cache.

Given the fact that we are caching all files to SSD, we experience relatively slow response times (we're talking about cache hit response times).

In our logs we find a lot of '0.000 seconds' (or close to it) response times (which is what we would expect). However, we also find quite some response times varying from just below or way above a second.

Does anybody have an idea how to figure out what causes the high cache-hit response times.

Attached with this post you will find our configuration and a screenshot from Amplify showing our performance stats.
Attachments:
open | download - 20180908 - performance issues forum amplify.png (104.3 KB)
open | download - 20180908 - performance issues forum config.txt (4 KB)
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