Original Post: Digital Ocean
#sudo apt update
Next, install the official package as follows:
#sudo apt install memcached
You can also install libmemcached-tools, which is a package that contains various tools that you can use to examine, test, and manage your Memcached server. Add the package to your server with the following command:
#sudo apt install libmemcached-tools
Memcached should now be installed as a service on your server, along with tools that will allow you to test its connectivity.
To start Memcached, run the following systemctl command:
#sudo systemctl start memcached