[GauntletWizard]

This bit me badly - An application that did significant autoscaling, and hit a peak of 30,000 read/write requests per second - But typically did more like 300.

The conversation with the Amazon support engineer told us that we had over a hundred partitions (which even he admitted was high for that number), and so our quota was effectively giving us 0 iops per partition. This obviously didn't work, and their only solution was "scale it back up, copy everything to a new table". Which we did, but was an engineering effort I'd rather have avoided.