How to Install Memcached on Debian 10

What is Memcached?

Free & open source, high-performance, distributed memory object caching system, generic in nature, but intended for use in speeding up dynamic web applications by alleviating database load.

Memcached is an in-memory key-value store for small chunks of arbitrary data (strings, objects) from results of database calls, API calls, or page rendering.

Memcached is simple yet powerful. Its simple design promotes quick deployment, ease of development, and solves many problems facing large data caches. Its API is available for most popular languages.


In this Howto we'll go through the process of installing Memcached on Debian 10 and it's valid for Debian 9 as well.


Installing Memcached:

First things first, let's make sure our server is up to date:


$ sudo apt update



Once we make sure all packages are up to date we'll go ahead and install Memcached by running the following command:



$ sudo apt install memcached libmemcached-tools





Once we confirm we want to continue by pressing Y it should install memcached and libmemcached-tools, which comes with multiple utilities to help us manage the Memcached server. The installation process should also take care of starting the Memcached service, we can run the following command to verify this:


$ sudo systemctl status memcached



If all went well it should have started the service and look similar to this:



Memcached is configured to listen on port 11211 by default, let's check to see what service is listening on this port with the following command:



$ sudo netstat -pnltu |grep 11211



If your server doesn't have netstat installed you can install it by running:



$ sudo apt install net-tools -y



The default setting in the config file located in /etc/memcached.conf will work in most cases, so without making any changes Memcached will be listening on localhost or (as shown on the previous image).

If you wish to allow connections from the outside you'll need to modify the memcached.conf file to listen on the server's external IP as opposed to localhost, for this we'll open /etc/memcached.conf with our preferred text editor:



$ nano /etc/memcached.conf



We'll then located the line containing -l

and replace with our server's external address, which for the sake of this guide will be, so the file should end up looking like this:



After saving our changes we need to restart memcached so that it starts listening on the external IP we just set:




$ sudo systemctl restart memcached




How to enable Memcached for PHP and Python Applications:

If you wish to use Memcached as a caching database for PHP applications such as WordPress, then we'll need the php-memcached extension, so let's go over how to install it here by running the following command:



$ sudo apt install php-memcached




For Python applications we'll install the following libraries using pip; please note that you may need to install pip using the following command first:



$ sudo apt install python3-pip




We then install the libraries by running:



$ sudo pip3 install pymemcache
$ sudo pip3 install python-memcached





That's it, you should now have a working Memcached installation on your Debian 10 server.

  • memcached, debian 10, linux
  • 43 Users Found This Useful
Was this answer helpful?

Related Articles

ownCloud Auto Install Script on Debian 7

Here is an easy way to install ownCloud on Debian 7 with a script, but first, for those who...

NGINX – Allow access only to certain IPs

Nginx has a nice module that not many people know about, it basically enables us...

How to configure NTP client in CentOS

What's NTP? NTP stands for Network Time Protocol, and it is an Internet protocol used to...

Initial Server Setup on CentOS 6

Here are some recommendations to setup your VPS or server when you first get it, some of these...

How To Install nginx on CentOS

What is NGINX? Nginx (pronounced "engine-x") is an open source reverse proxy server for HTTP,...