WordPress MU

I'm playing around with a test site and the latest trunk version of 1.5RC1 and I can't see how to enable the built-in caching. The wp-config-sample.php file doesn't have the define('ENABLE_CACHE', true); line it, and if I add that line myself it doesn't seem to do anything. I deleted the wp-content/cache folder and recreated it with a 777 chmod. Is there something else I need to do to get caching working properly?

Object cache was removed in Wordpress 2.5 and hence, WPMU 1.5. I am wondering which plugins for object cache now will work with 1.5 myself for object cache.

Trent

I wasn't aware of that. Does that mean WPMU will have no built-in caching out of the box?

That is correct. Maybe for regular WP I could see it being used through a plugin, but in an MU environment (at least to me) it makes much more sense to make it function as it had through the core.

with software that can support blogs numbered in the hundreds of thousands, cache would in the core.

I would think so, really.

Especially with a lot of the plugins out there. A single page could go from a few dozen queries being run every time to over a thousand, all in the blink of a plugin or two and object caching being turned off.

I can think of a few plugins off the top of my head like that. The sitewide feed, and a plugin for collapsible categories comes to mind. There's a lot more out there as well.

On a single install of WP, it really might not be that big of a deal. However, when you're talking hundreds, thousands, or tens of thousands of blogs reality has to set in that such basic caching should be core and not through a plugin.

At least that's what makes sense in my mind.

Agreed. should be core.

Yes - in the core. Please.

Stuck a ticket in trac, pointing to this thread.

Let the discussion continue.