Hi
In delayed.php i see that on line 62: header('Vary: Accept-Encoding');
is defined.
When i test on gtmetrix, all is fine. The comment says:
Specify a Vary: Accept-Encoding header – You scored 100% on this suggestion - nothing to do here!
When i test on pindom, however, it says otherwise:
The following publicly cacheable, compressible resources should have a "Vary: Accept-Encoding" header: autoptimized css and js.
Ok, i go back to my backend, deactivate autoptimize, activate it again and empty the cache and to my surprise, pingdom is no longer making the suggestion mentioned above.
So, let's check once more. Oh, strange, the suggestions is back.
I am a little confused about this inconsistent results.
Is this code working and which result is reliable?
Thanks for your interest.
regards
theo