This module add a button to Magento cache page, When clicked it will trigger a curl request to the current http_host with [schema]://[host_name]/* PURGE
You need to configure page speed to accept PURGE commands. https://developers.google.com/speed/pagespeed/module/system
ModPagespeedEnableCachePurge on
ModPagespeedPurgeMethod PURGE
pagespeed EnableCachePurge on;
pagespeed PurgeMethod PURGE;
PageSpeed is minimu version of 1.9.32.1