Browsing All posts tagged under »MongoDB«

Foursquare’s MongoDB Outage

October 15, 2010

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Foursquare recently suffered a total site outage for eleven hours. The outage was caused by unexpected uneven growth in their MongoDB database that their monitoring didn’t detect. The system outage was prolonged when an attempt to add a partition didn’t work due to fragmentation, and required taking the database offline to compact it. This article […]