TecMint published a tutorial about installing Memcached on Ubuntu.

How to Install and Configure Memcached on Ubuntu

Memcached is a free and opensource in-memory caching system that speeds up web applications by caching large volumes of data in memory that are generated from page load requests or API calls. Memcached is particularly useful in speeding up PHP-based web applications such as WordPress, Joomla, Drupal, and Python applications as well. In this tutorial, we look at how you can install Memcached on Ubuntu. For demonstration purposes, we will use Ubuntu 20.04 Focal Fossa. Granted, the same guide will apply for Ubuntu 16.04 and later versions.

How to Install and Configure Memcached on Ubuntu