Improve the real or perceived speed of the site, or monitor performance metrics.
Provides integration with the XHProf PHP extension and a simple interface for viewing and downloading XHProf samples and profiling information.
This Queue API backend allows you to add a configurable delay to queue items between enqueueing and dequeueing.
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.