gittip/www.gittip.com — pull request #2041 by zwn (2014-02-16 17:42:27+00:00)
Title: Throttle set_session_expires.

set_session_expires used to update the field `session_expires` in the participants
table on each http hit.

From https://github.com/gittip/www.gittip.com/issues/1878#issuecomment-35201096