Redis and Php-Redis with drupal 9 on Linux
Install Redis
sudo apt-get update && sudo apt-get upgrade
sudo apt install redis-server
sudo apt install php-redis
Check
sudo systemctl status redis-server
redis-cli ping
sudo apt-get update && sudo apt-get upgrade
sudo apt install redis-server
sudo apt install php-redis
sudo systemctl status redis-server
redis-cli ping
When you request a let's encrypt wildcard certificate with virtualmin you may have an error like this:
Syntax:
\Drupal::service('page_cache_kill_switch')->trigger();
Example on a controller:
composer global require drush/drush:10.x
sudo apt install apache2
sudo apt install mysql-server