The PhpFastCache module makes use of PhpFastCache library. It's main goal is to improve Drupal's performances by adding a new cache backend system depending your needs
- phpfastcache/phpfastcache
- php7
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Enable PhpFastCache module in: 
 admin/modules
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You'll now find a PhpFastCache tab in the "Configuration > Development" menu 
 admin/config/development/phpfastcache
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Settings up the driver you need and it's options (if needed) 
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Alter your settings.php to add this line:\ 
$settings['cache']['default'] = 'cache.backend.phpfastcache';
Plenty ATM, but it's still in development :)