In this tutorial, we will show you how to install and configure Memcached on Ubuntu 16.04 LTS server. For those of you who didn’t know, Memcached is a system daemon that allows you to cache information on RAM memory, this allows you better app speeds and avoids bad performance on your dedicated or VPS server. It is very useful for optimizing dynamic websites and enabled speed by caching objects in memory.
This article assumes you have at least basic knowledge of Linux, know how to use the shell, and most importantly, you host your site on your own VPS. The installation is quite simple and assumes you are running in the root account, if not you may need to add ‘
sudo‘ to the commands to get root privileges. I will show you the step-by-step installation Memcached on a Ubuntu 16.04 (Xenial Xerus) server.
- A server running one of the following operating systems: Ubuntu 16.04 (Xenial Xerus).
- It’s recommended that you use a fresh OS install to prevent any potential issues.
- SSH access to the server (or just open Terminal if you’re on a desktop).
non-root sudo useror access to the
root user. We recommend acting as a
non-root sudo user, however, as you can harm your system if you’re not careful when acting as the root.
Table of Contents
Install Memcached on Ubuntu 16.04 LTS
Step 1. First, make sure that all your system packages are up-to-date by running the following
apt-get commands in the terminal.
sudo apt-get update sudo apt-get upgrade
Step 2. Installing Memcached.
Now use the following command to install the Memcached service on your system:
sudo apt-get -y install memcached
Step 3. Configuration Memcached.
The default configuration file can be found at:
When started, Memcached will start on port 11211 by default per the default configuration file:
# Default connection port is 11211 -p 11211
Exit and save the configuration file, and then restart Memcached:
systemctl restart memcached
Install Memcached extension for PHP
You will also need to install the required PHP extension for Memcached:
apt-get install php-memcached
Now, we can restart Apache so that the changes take place:
systemctl restart apache2
To test PHP, create a test file named info.php with the content below. Save the file, then browse to it to see if PHP is working:
<?php phpinfo(); ?>
Try to access it at
http://your_server_ip_address/info.php. If the PHP info page is rendered in your browser then everything looks good and you are ready to proceed further.
Congratulations! You have successfully installed Memcached. Thanks for using this tutorial for installing Memcached on Ubuntu 16.04 LTS (Xenial Xerus) system. For additional help or useful information, we recommend you to check the official Memcached website.