The maximum was reached on 2013-12-19 with ~820K requests/day. The
number is declining again, and back to ~300K requests/day for
2013-12-22.

It seems this spike can be attributed to Grameenphone announcing
Wikipedia Zero on their homepage:

http://www.grameenphone.com/whats-new/wikipedia-zero-knowledge-free

(And judgding by the requested URLs below, Wikipedia Zero has been
added to Speed Dial as well)

The increase was >98% on the

zero.wikipedia.org
bn.zero.wikipedia.org

domains. bn is in the carrier's showLangs, and the carrier only
zero-rates the zerodot domain. Which matches the above explanation.

The following three URLs are the most requested for each day since
2013-12-19:

http://bn.zero.wikipedia.org/wiki/Main_Page
http://zero.wikipedia.org/?cs=operamini_grameenphone_speeddial
http://bn.zero.wikipedia.org/wiki/%E0%A6%89%E0%A6%87%E0%A6%95%E0%A6%BF%E0%A6%AA%E0%A6%BF%E0%A6%A1%E0%A6%BF%E0%A6%AF%E0%A6%BC%E0%A6%BE:%E0%A6%A8%E0%A6%BF%E0%A6%B0%E0%A7%8D%E0%A6%AC%E0%A6%BE%E0%A6%9A%E0%A6%BF%E0%A6%A4_%E0%A6%A8%E0%A6%BF%E0%A6%AC%E0%A6%A8%E0%A7%8D%E0%A6%A7
(According to google translate, the last item is “Selected Articles”
on the “Wikipedia” namespace)

Those three URLs account for about a third up to half of the
zero=470-01 tagged traffic per day since 2013-12-19. The URLs are
requested at least an order of magnitude less.

About half of the zero=470-01 tagged traffic had “-” as
referrer. About 1/6 had

http://bn.zero.wikipedia.org/wiki/Main_Page

. That matches what we saw before the announcement.

The Grameenphone's announce listed zero.wikipedia.com (“.com” instead
of “.org”) as address, so we saw some requests to that domain. But
that was <1% per day for the zero=470-01 tagged traffic.

I did not notice other peculiarities in the traffic. So it seems to be
good traffic that is caused by the carrier's advertising.

bingle-admin wrote:

Prioritization and scheduling of this bug is tracked on Mingle card https://wikimedia.mingle.thoughtworks.com/projects/analytics/cards/1353