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peterzawistowicz/gist:a162d3a61dd7ad392ec8

Created May 27, 2015 21:18
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gistfile1.txt
db.activities.aggregate(([
{ $match: { time: { $gt: NOW-1H } }},
{ $group: { _id: "$userId", count: {$sum: 1} } }],
{ allowDiskUse: 1 })
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