It's interesting to look at the HTTP requests charts at
http://wmperf.mine.nu:8043/wmperf/index.org.wikimedia.all-squids.html
For example, this night at 22:00 and 3:00 UTC (afternoon to evening in the
US) there were two big traffic spikes, easily handled by the squids'
caches. Anyone has ideas about what may cause them? Big sites linking to
us?
Alfio