Before proceeding please ensure that you are using Drupal 8.x or later.
Begin by adding the following code to the .htaccess file in your Drupal site's directory:
<IfModule LiteSpeed>
CacheLookup on
</IfModule>
We recommend adding this code to the top of your .htaccess file.
Next, download the latest LiteSpeed Cache module from https://github.com/litespeedtech/lscache-drupal/releases.
Log into your Drupal administrative area and click on Extend from the main menu and search for "update". Install the Update Manager module if it is not currently enabled.
Next, click on Reports from the main menu and then on Available Updates. Click on the "Install new module or theme" button and upload the zip file you just downloaded.
Finally, click on the "Enable newly added modules" link, search for "litespeed" and enable the LiteSpeed Cache module.
That’s it! Your Drupal articles will now be cached and load much faster!