MPS Flusher allows you to clear the cache of the server on which the site is running CMS Joomla. This can be achieved through the command applied to the file “cache.flush” in the specified directory, such as ModPagespeedFileCachePath. The default path is ‘/var/cache/mod_pagespeed/cache.flush’. You also need to make sure that the Apache user has write permissions assigned to this folder.
What you need to do?
Login to the admin panel of Joomla.
Go to menu Manager extensions.
Download the installation file to your server.
To open component settings: Components-MPS Flusher.
Set another way, if you apply it yourself.