I am getting consistent cache hit misses with only a cache hit of 0.1%. The reason, the cache indicates is disallowed vary header values are present and the max age is too low. Thing is, it does not indicate the disallowed vary headers present.
My settings are as follows:
Enable Caching For Cookies OFF Edit
Default Cache Age (s) 2592000 seconds (30 days) Edit
Maximum Cache Age (s) 8640100 seconds (100 days) Edit
Minimum Cache Age Threshold (s) 300 seconds Edit
Minimum Cache Age (s) Edit
Override Cache Control Headers ON Edit
Force Caching by Device Type ON Edit
Vary Headers to be removed from origin Edit
Ignore Cache-Control: no-cache ON Edit
Grace Period 600 seconds Edit
Vary Headers to be added to origin Edit
Allowed HTTP Status Codes 200301302 Edit