This article covers how to install and configure the Memcached caching server on CentOS 8 system through the command-line tool. Now, you can easily install and configure the Memcached server on your CentOS 8 system easily. Memcached is a free and open-source high-performance in-memory key-value data store. Typically, it used as a caching system to speed up applications by caching various objects from the results of database calls.To install memcached on CentOS, perform the following tasks as a user with root privileges:1. Install memcached and its dependencies:$ yum -y update$ yum install -y libevent libevent-devel$ yum install -y memcached$ yum install -y php-pecl-memcache2. Change the memcached configuration setting for CACHESIZE and OPTIONS:i. Open /etc/sysconfig/memcached in a text editor.ii. Locate the value for CACHESIZE and change it to at least 1GB. For exampleCACHESIZE="1GB"iii. Locate the value for OPTIONS and change it to localhost or 127.0.0.13. Save your changes to memcached and exit the text editor.4. Restart memcached.$ service memcached restart5. Restart your web server.For Apache:$ service httpd restart