Memcached is a high performance in-memory caching system that can be used to speed up applications and websites that use databases. Memcached does not write to disk, instead store its content in system memory which makes it faster.
Majority of the content management systems in used today have tools to take advantage of Memcached. If configured correctly, you may be able to see huge improvements to your websites and applications.
This brief tutorial shows you how to install Memcached on Ubuntu 17.04 / 17.10 servers