10 second delay time on new pages with CDN feature activated
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I have setup a test server and discovered the cause of the 10 second delay time. It was not the .htaccess file, but rather the W3 Total Cache plugin CDN feature.
I have tested the plugin and found that a 10 second delay occurs when loading a new page when the CDN feature is activated. This 10 second delay occurs regardless of whether the CDN feature is set to Origin Push (CloudFront), Origin Push (S3), Origin Pull (CloudFront), or Origin Pull (Generic). I can work around the problem by uploading static files to S3 while the feature is activated, and then turning off the plugin’s CDN feature. Then I will replace media domains with the cloudfront domain using custom PHP. Everything is fast again, as long as the plugin’s CDN feature is deactivated.
Please let me know if you can fix your code, so that the 10 second delay time does not occur for new pages when the CDN feature is activated. I can recreate the issue simply by turning on the CDN feature and loading any page of the site with a query string added to the URL (ie: ?123) and then running a Google PageSpeed test:
https://developers.google.com/speed/pagespeed/insights/Google reports a 10 second server response time delay and gives a low score. Then, deactivate the CDN feature and change the query string (ie: ?124) and run the test again. It loads fast in under 200ms. This exposes an obvious bug in your plugin’s code, as there should be no need for the plugin to take 10 seconds converting media domains into the CDN domain.
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