[Plugin: WP-FFPC] Memcache In Protocol Mode Binary

@justink101: I’ve never tried that setting to be honest. Can you please tell me a situation, where changing that parameter is really necessary?

Although the plugin should work, I’ll take a look into it, but seems to be a rare situation to use memcache in binary mode.

Peter,

So we are building a high scale WordPress multi-site setup, and our memcache server is on a separate server from the web/php workers. Doing some benchmarks, the traffic between the web server and memcache server was reaching 40-60mbps. Read that using binary protocol results in much smaller network traffic.

Would you be able to assist me one-on-one for a bit? We could pay you for your time.

Although it sounds great I have no idea yet how to even get started hunting the cause, but I do want to solve it ??

@justink101: I’ve added

memcache.protocol=”binary”

but the plugin did not fail, it worked the save a before.
Can you please tell me what did you experienced as breaking?

Peter,

When we enable:

memcache.protocol = “binary”

We stop seeing the cached header in the response, and indeed its not caching in memcached. Can you confirm that when you running in binary, its still caching and working?

Thanks.

Peter,

Here are additional details, maybe you can replicate.

PHP Version: 5.3.10
PHP Memcache Version: 3.0.6
Memcached Version: 1.4.13

Thanks.

Hi,

I’ll make some tests with binary protocol on an other machine as well to see if anything happens.

Peter,

Wanted to follow up, and see if you can reproduce binary mode not working with WP-FFPC.

If we donate some money, do you think you can free up a bit of time to work with us on WP-FFPC for a bit.

Thanks.

Hi Justin,

No, I wasn’t able to reproduce the bug yet. To be honest, I did not have the time to put together a system with the versions you described, but I still want to figure this out, I just don’t really know, when.

My system is an Ubuntu 11.10, with the following versions:
Memcached 1.4.7 ( from ubuntu package)
PHP Memcache 2.2.6 ( 3.0.6 is still beta, that’s the reason )
PHP Version 5.3.6-13ubuntu3.6

… and now I see that the reason I’m unable to reproduce it is that I’m using pre 3.0 version of PHP-Memcache.

I’m going to upgrade it and get back to this problem.

sorry for post but i cant create new topic ??

hi! (sorry for my poor english)

my install:

nginx
php-fpm
php 5.3
memcached
memcache librarie

wordpress 3.3.2
multisite install (sub-directories)
Networks for WordPress plugin

I have three networks and I activated wp-ffp on one of them (have 2 blogs in that network), in the configuration I have enabled “Enable debug mode” but I dont see the header “X-Cache-Engine” in the response headers. also I dont see errors in php. seems like plugin was not activated

in the plugin configuration page, I see Backend status: up & running

any help please!?

thank you very much

Hi @pepejose,

I’m sorry, I didn’t have any time to retouch the plugin until now.
Actually I’m unable to figure out the memcache modul & binary mode error, it seems to be deeper than my plugin.

But! Eventually I’ve made a progress and made the memcached modul to go with binary mode and be compabible with nginx as well – if you could use that, that may help you.

Cheers,
Peter

Seems that memcache module has a serious bug using binary mode; I’m closing this topic, binary mode is default with the plugin using memcached and not supported using memcache.