Create Custom Module in Drupal 9 (ConfigForm, Controller and cache tags)
In order to proceed you should have:
Drupal installed
virtual host ready for you
xampp setup or other web server
composer installed
drush installed
#STEP 1: Create required files
#STEP 2: Enable module
#STEP 3: Populate form
#STEP 4: Fix issue with cache
/ create-custom-module-in-drupal-9