XF 1.4 caching issue

[Chad]

Trying to set up memcache for XF.

Installed on my dedicated box using this without a hitch;
http://www.servernoobs.com/install-memcache-onto-cpanel-running-centos/

root@server [~]# ps -e | grep memcached
30900 ?  00:00:00 memcached

Followed XF's doc:
https://xenforo.com/help/cache/

My /library/config.php file I've added this:

/ ** CACHING ** /

$config['cache']['enabled'] = true;
$config['cache']['frontend'] = 'Core';
$config['cache']['frontendOptions']['cache_id_prefix'] = 'xf_';

$config['cache']['backend'] = 'Memcached';
$config['cache']['backendOptions'] = array(
    'compression' => false,
    'servers' => array(
        array(
            // your memcached server IP /address
            'host' => 'localhost',
          
            // memcached port
            'port' => 11211,
        )
    )
);

Resulted in blank page loads.

 

[Mike]

It should give you an error message if not, but do you have the "memcache" extension enabled in PHP? (See your PHP info.) You need that to use that caching method.

 

[Chad]

Hi Mike,

Yes memcache.so was in php.ini and apache restarted, etc. It's there and was set up correctly.

 

[Mike]

Can you turn on display_errors in PHP to see if anything shows up? You can do it in php.ini or it should be doable in config.php:

ini_set('display_errors', true);

 

[Chad]

Real strange.

I added this to config.php and reloaded my site. Still nothing, completely blank.

/ ** CACHING ** /

$config['cache']['enabled'] = true;
$config['cache']['frontend'] = 'Core';
$config['cache']['frontendOptions']['cache_id_prefix'] = 'xf_';

$config['cache']['backend'] = 'Memcached';
$config['cache']['backendOptions'] = array(
    'compression' => false,
    'servers' => array(
        array(
            // your memcached server IP /address
            'host' => 'localhost',
         
            // memcached port
            'port' => 11211,
        )
    )
);

ini_set('display_errors', true);

 

[Chad]

Just some more info to show you it's installed at least.

root@server [~]# ps -e | grep memcached
30900 ? 00:00:00 memcached

Within the php.in file

extension="memcache.so"

Apache restarted.

 

[MattW]

Can you do a ps -ef | grep memcached so we can see all the options it's being started with?

 

[Chad]

root@server [~]# ps -ef | grep memcached
root 6616 6587 0 21:15 pts/0 00:00:00 grep memcached
495 30900 1 0 13:44 ? 00:00:00 memcached -d -p 11211 -u memcached -m 64 -c 1024 -P /var/run/memcached/memcached.pid

Thanks @MattW

 

[MattW]

That looks like it's running as the daemon, and not actually posting the listen to localhost.

This is what mine looks like:

/usr/bin/memcached -d -l 127.0.0.1 -p 11211 -U 11211 -P /var/run/memcached/memcached.pid -u memcached -m 128 -o slab_reassign slab_automove

What do you have in the memcached config file?

Can you try a netstat -an | grep 11211 and see if there is actually a TCP listen being posted?

 

[Chad]

root@server [~]# netstat -an | grep 11211
tcp 0 0 0.0.0.0:11211 0.0.0.0:* LISTEN
tcp 0 0 :::11211 :::* LISTEN
udp 0 0 0.0.0.0:11211 0.0.0.0:*
udp 0 0 :::11211 :::*

 

[MattW]

It's there, but your ps -ef isn't showing the -l switch for 127.0.0.1

[root@host library]# netstat -an | grep 11211
tcp        0      0 127.0.0.1:11211             0.0.0.0:*                   LISTEN     
udp        0      0 127.0.0.1:11211             0.0.0.0:*                              
[root@host library]#

 

[Chad]

Hey @MattW

I figured it out. It was the / ** Cache ** / line. I removed it. No more blank pages.

Just curious, can you recommend optimal memcache settings for XF? Super speedy page loads and all

This is what I have as default in config

$config['cache']['enabled'] = true;
$config['cache']['frontend'] = 'Core';
$config['cache']['frontendOptions']['cache_id_prefix'] = 'xf_';

$config['cache']['backend'] = 'Memcached';
$config['cache']['backendOptions'] = array(
    'compression' => false,
    'servers' => array(
        array(
            // your memcached server IP /address
            'host' => 'localhost',
        
            // memcached port
            'port' => 11211,
        )
    )
);