Install Redis on Plesk Debian Server

To install Redis on Plesk Debian/Ubuntu server, run

apt install -y redis-server redis-tools

Enable and restart redis-server

systemctl enable redis-server
systemctl restart redis-server

Now install PHP Modules

apt install -y plesk-php70-redis plesk-php71-redis plesk-php72-redis plesk-php73-redis plesk-php74-redis

After installing, you will see redis listed in phpinfo() page.