WordPress Caching with W3 Total Cache and memcached

Posted on July 31, 2024 in Computers, Linux CLI

There is much on this topic, this is just one solution.

W3 Total Cache is a well known performance plugin for WordPress, and it can use memcached.

memcached should already be listening on loopback, not on a public ip!, on a tcp socket:

root@www:~# netstat -lnp --tcp |head -3
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name
tcp        0      0 127.0.0.1:11211         0.0.0.0:*               LISTEN      681/memcached

Going to need the php extension to connect to the memcached server: 

apt install php8.2-memcached

After which, the main things in W3TC we are looking for are object cache (php), page cache, and database cache and all three are working so we are all set.