I followed many tutorial about leveraging browser caching nevertheless I couldn’t configure it succesfully, in fact GTmetric (PageSpeed and YSlow) notified me many static file that don’t have a cache expire header.
That’s my GTmetrix result (pagespeed):
I tried to find the problem looking at compatibility test on W3TC and it notified me many Apache modules missed which are required for browser caching:
I followed some tutorial to enable these modules but it seems they are alread enabled, in fact they are already uncommented on my /opt/bitnami/apache2/conf/httpd.conf
This is my .htaccess
Thanks in advance for your assistance