what is up
Update & Prefetch codes in the core system, but using some same codes and working in the transform layer. we put here for altogether for future enhancement.
named full as Scheduled Update, which is a crontab like spider for content revalidates.
works as a robot that prefetch your html elements before your browser request it. Prefetch have another API Hooking system for some more control of the job.
Update problems & roadmap
Prefetch problems & roadmap