宕机是由于他们的MongoDB出现了数据的不均衡增长，而这一点并没有被事先检测到。
The outage was caused by unexpected uneven growth in their MongoDB database that their monitoring didn't detect.
作者认为从1994年开始从中国进口的低成本商品就单这一项就抵消我们计算得到的收入不均衡增长率超过四分之一。
The authors reckon that low-cost imports from China alone offset more than a quarter of the measured rise in income inequality since 1994.
由于用户持续增长，分区以一种不均衡的方式在增长，Horowitz指出。
As the system continued to grow, the partitions grew in an imbalanced fashion. Horowitz notes.
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