Comments on: Using memcached with WordPress object cache

By: How To: Speed Up the WordPress Admin Panel on a VPS

How To: Speed Up the WordPress Admin Panel on a VPS — Wed, 29 Sep 2010 19:39:20 +0000

[...] To solve this, I found that you can force a unique string to be added to the memcache key by modifying the object-cache.php file slightly. This post explains how to do it: Using memcached with WordPress object cache. [...]

By: S H Mohanjith

S H Mohanjith — Mon, 19 Jul 2010 12:21:47 +0000

It could be either because the key-value pairs are not being cached (or they are being removed from the cache due to memcached running out of memory) or network connection to the memcached server has very high latency. You should try to see why. Under normal circumstances using memcache (object-cache.php) will speed up page load time.

By: JM

JM — Mon, 21 Jun 2010 19:32:44 +0000

I setup memcache with another wordpress site running on an OS X server. Memcache is installed and running.. however the site now loads about 10s slower. If I change object-cache.php to object-cache.php_ the site instantly goes back to loading in just under 2s. Any idea why using the object-cache would slow the site down this much? Thanks!

By: JM

JM — Mon, 21 Jun 2010 18:38:38 +0000

Excellent Article! We’re now using memcache with WordPress sites and for our in-house Kaltura-CE install off one server. Thank you!

By: S H Mohanjith

S H Mohanjith — Mon, 31 May 2010 17:04:48 +0000

Please follow the instructions given in the blog post, I do not maintain the plugin you mention. You might want to contact the plugin developer for help. As far as I know the plugin triggers a fatal error. If I get time I’ll create what’s discussed in this post to a plugin for everyones benefit

By: Ovidiu

Ovidiu — Mon, 31 May 2010 16:07:31 +0000

possibly, but the problem occurs with an unmodified version I got from here: http://wordpress.org/extend/plugins/memcached/

Could you spare a minute and have a look? I am not good with PHP…

By: S H Mohanjith

S H Mohanjith — Fri, 28 May 2010 14:05:39 +0000

Please see object-cache.php around line 74. You probably have an extra ‘}’

By: Ovidiu

Ovidiu — Tue, 18 May 2010 23:28:20 +0000

btw, I didn’t apply your patch as I think I don’t need it… I am trying to implement memcache just for one wpmu installation

By: Ovidiu

Ovidiu — Tue, 18 May 2010 23:26:35 +0000

I get this error after following your instructions:

[Wed May 19 01:23:53 2010] [warn] mod_fcgid: stderr: PHP Parse error: syntax error, unexpected ‘}’ in /var/www/clients/client1/web9/web/wp-content/object-cache.php on line 74

any idea what could be wrong?

By: S H Mohanjith

S H Mohanjith — Fri, 14 May 2010 15:07:51 +0000

Updated the post with a link to patched file. For your convenience, http://mohanjith.net/blog/wp-content/uploads/2009/03/object-cachephp.txt

By: Patryk

Patryk — Fri, 07 May 2010 10:25:21 +0000

Can You post modified object-cache.php?

I’m using windows system and don’t have shell access to my webhost.

By: LUis

LUis — Tue, 19 Jan 2010 00:57:38 +0000

I need to make manually changes, which makes the patch changes?

By: LUis

LUis — Mon, 18 Jan 2010 17:00:02 +0000

which makes the patch?

By: S H Mohanjith

S H Mohanjith — Sat, 16 Jan 2010 06:57:28 +0000

LUis, if you applied the patch properly and made the other configuration changes it will work. I’m using the same memcached server for mohanjith.net/blog and priyani.mohanjith.net/blog and have no such issues. I did have similar issues without the patch.

Can you post your object-cache.php somewhere I can have a look?

By: LUis

LUis — Sat, 16 Jan 2010 03:17:27 +0000

dont work with two installation of wordpress, the second installation in the the home page and others show in blank

By: LUis

LUis — Fri, 15 Jan 2010 20:03:26 +0000

ok, but the patch work in this case?

By: S H Mohanjith

S H Mohanjith — Wed, 13 Jan 2010 04:43:39 +0000

You are not making much sense, do you want to use the same memcache server for two WordPress installations. Please read the post again, it is about using the same memcache server for two WordPress installations, whether it’s on two domains or not is insignificant.

By: LUis

LUis — Wed, 13 Jan 2010 03:42:02 +0000

thanks, but i need memcache in two domains different in the same server

By: S H Mohanjith

S H Mohanjith — Tue, 12 Jan 2010 05:48:15 +0000

I’m assuming your WordPress directory is named blog. Run the following command in the parent directory.

patch -p0 < object-cachephp.patch

By: LUis

LUis — Tue, 12 Jan 2010 00:16:02 +0000

how install the parch?

By: online stock trading guru

online stock trading guru — Mon, 11 Jan 2010 00:30:33 +0000

Hey, I found your blog in a new directory of blogs. I dont know how your blog came up, must have been a typo, anyway cool blog, I bookmarked you.

I’m Out!

By: Caching and optimization for WordPress talk at Stereonaut!

Caching and optimization for WordPress talk at Stereonaut! — Fri, 08 Jan 2010 22:54:59 +0000

[...] Memcached for WordPress. [...]

By: Memcached and WordPress MU — Chris Heisel

Memcached and WordPress MU — Chris Heisel — Sat, 19 Sep 2009 19:51:38 +0000

[...] Mohanjith for the object cache set up [...]

By: haberler

haberler — Fri, 28 Aug 2009 20:17:21 +0000

Mohanjith thank you man its working great!

By: ryan

ryan — Thu, 27 Aug 2009 15:22:42 +0000

this seems to work for multiple blogs in wordpress mu or multiple vanilla wordpress…

However this does not work with multiple installations of wordpress mu. Any way to get it to work instead of starting up another memcache server?