Checking Memcached Usage on WordPress Site?

Cheerag Nundlall · Nov 26, 2023

Hello everyone,

I'm seeking guidance on how to check if my WordPress site is utilizing Memcached or not. Could anyone provide instructions or tips on how to verify the usage of Memcached in my WordPress setup?

Your help would be greatly appreciated. Thank you!

AlbaHost · Nov 27, 2023

Create a file whatevername.php and put this code in it:

Code:

<?php
phpinfo();
?>

and:

Code:

<?php

try

{
    $memcached = new Memcached();
    $memcached->addServer("127.0.0.1", 11211);
    $response = $memcached->get("sample_key");
 
    if($response==true)
    {
      echo $response;
    }

    else

    {
    echo "Cache is empty";
    $memcached->set("sample_key", "Sample data from cache") ;
    }
}
catch (exception $e)
{
echo $e->getMessage();
}
?>

visit that file and you will know if is it using or not.
More: https://www.alibabacloud.com/blog/how-to-set-up-memcached-with-php-on-ubuntu-18-04_595628

Cheerag Nundlall · Nov 29, 2023

On my server, when checking via SSH, I can see that Memcached is running. However, when I inspect the Memcached module in the PHP info file, it doesn't appear as indicated in the blog post I referred to.

AlbaHost · Nov 29, 2023

Make sure you have memcached php extension installed/enabled.

HostShark · Nov 29, 2023

What OS are you running? Ubuntu, CentOS, AlmaLinux etc.

HostShark · Nov 30, 2023

Well I was wondering if you have memcached installed properly. Please refer to this guide:

https://www.tecmint.com/install-memcached-on-centos-7/

Cheerag Nundlall · Nov 30, 2023

When i run this command in SSH

ps aux | grep memcached
memcach+ 1098 0.0 0.0 373948 32540 ? Ssl Nov11 13:41 /usr/bin/memcached -u memcached -p 11211 -m 1524 -c 15240
root 11867 0.0 0.0 110804 908 pts/0 S+ 16:48 0:00 grep --color=auto memcached

or this command

systemctl status memcached
● memcached.service - Memcached
Loaded: loaded (/usr/lib/systemd/system/memcached.service; enabled; vendor preset: disabled)
Active: active (running) since Sat 2023-11-11 06:03:54 CET; 2 weeks 5 days ago
Main PID: 1098 (memcached)
CGroup: /system.slice/memcached.service
└─1098 /usr/bin/memcached -u memcached -p 11211 -m 1524 -c 15240

Nov 11 06:03:54 srv.myserverdm.com systemd[1]: Started Memcached.

I saw memcached there but I think my wordpress is not running with it

HostShark · Nov 30, 2023

Did you install the PHP extension?

Install Memcached PHP extension

Now, install a PHP extension to work with the Memcached daemon.

# yum install php-pecl-memcache
Install Memcached Perl Library
Install Perl library for Memcached.

# yum install perl-Cache-Memcached
Install Memcached Python Library
Install python library for Memcached.

# yum install python-memcached
Restart Web Server
Restart the Apache or Nginx service to reflect changes.

# systemctl restart httpd
# systemctl restart nginx

Checking Memcached Usage on WordPress Site?

Cheerag Nundlall

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