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google varz: "Some varz store strings, others store integers or longs or doubles. Some varz are used for statistics. So that you just bump a varz, and, on the page, you can see the frequency, averaged per 10 minutes, per hour, and the like. Extremely useful to count hits, functionality usage, failures, anything. We were actually required, when... - http://ivan-ghandhi.livejournal.com/1103735.html?nc=4