Installing Memcached

Let me give you an example of installing Memcached, which allows you to cache data in RAM.

In Ubuntu/Debian, memcached can be installed using the following commands (as well as installing a set of useful utilities):

sudo apt update
sudo apt install memcached libmemcached-tools

Open the configuration file in any text editor:

sudo nano /etc/memcached.conf

For security purposes, disable the UDP protocol, for this, add at the end of the file:

-U 0

You can also allocate more RAM, for example 1Gb:

-m 1024

Restart memcached to apply the changes:

sudo systemctl restart memcached

If you need to use memcached with Apache2 or Nginx (php-fpm), then install the php extension and restart the web server:

sudo apt install php-memcached
sudo systemctl restart apache2
sudo systemctl restart php7.2-fpm

Make sure memcached only works on the local interface (by default on port 11211):

sudo netstat -plunt | grep memcached
sudo ps ax | grep memcached
sudo systemctl status memcached

You can see the statistics like this:

memcstat --servers=""
echo "stats settings" | nc localhost 11211

You can also create a php file with the content below and open it in a browser to view memcached parameters:


See also my articles:
Installing WordPress and Nginx
Simple page caching

Leave a comment

Leave a Reply