WordPress should have a scheduler

[firas]

It'd be nice to have a scheduling mechanism in WP for extensions to hook into ('do this function every 30 minutes'). Possibly using the techniques in WP-Cron:  http://www.skippy.net/blog/category/wp-cron/

A caveat in that method--and pretty much any php-triggered one--is that it might not execute with enough frequency on low traffic sites, so its list of things to do should be triggerable by a system scheduler too, such as a cronjob.

How much of this has been covered by #2425?

Duplicate of #2425.

Thanks, Nazgul.