How To Install Memcached on CentOS 7


This how to will help you with your install and configuration of Memcached on your CentOS 7 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 avoid 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. I will show you through the step by step installation Memcached on CentOS 7 server.

Install Memcached on CentOS 7

Step 1. First of all make sure that all packages are up to date.

Step 2. Install Memcached.

Execute the following commands to install memcached:

Now start Memcached services and add it to automatically start on your system start-up using:

Step 3. Configuration Memcached.

The default configuration memcached file can be found at:

When started, Memcached will start on port 11211 by default per the default configuration file, Example Following configuration use 512 Mb memory:

Exit and save the configuration file, and then restart Memcached:

Step 4. Configure Iptables for Memcached.

Open Memcached Port (11211) on Iptables Firewall:

Installing Memcached PHP Extension

You can install PHP Memcached extension by typing:

Now, we can restart Apache so that the changes take place:

To test PHP, create a test file named info.php with he content below. Save the file, then browse to it to see if PHP is working:

Try to access it at http://your_server_ip/info.php. If the PHP info page is rendered in your browser then everything looks good and you are ready to proceed further.

Memcached PHP Extension

Congratulation’s! You have successfully installed Memcached. Thanks for using this tutorial for installing Memcached in CentOS 7 system. For additional help or useful information, we recommend you to check the official Memcached web site.

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