Improve the real or perceived speed of the site, or monitor performance metrics.
Add-On module for the Static Generator module.
About Google PageSpeed Insights
Private Image Cache enables caching of images in a private file system. This is useful when a user has access to the image.
This module allows you to turn on Drupal page caching but exclude certain paths.
The page caches provided by the drupal core or by different reverse proxies or by browsers themselves are not suitable for pages like entity edit forms.
Cache Warmer Connect is a module to integrate your Drupal site with the cache-warmer.com service.