Cross-posted to wikitech-l and wikipedia-l because I thought there might
be wider interest.
The master database server for the Korean Wikipedia has now been moved
to our cluster in Korea. The switch went quite well, with no downtime
and only half an hour of read-only time, most of that due to me mucking
around with the configuration and fixing bugs. All Apache processing for
that wiki is now done in Korea, including serving images. Only commons
images are drawn from Florida.
This is a pilot for full utilisation of the Yahoo cluster, eventually
we'll move ja and the other East Asian wikis there. For now, the Koreans
have a big cluster all to themselves, so they should expect to get pages
back faster than you can blink at any time of the day or night. A life
of sheer bliss that the rest of us can only dream of :)
-- Tim Starling