DynamoDB adaptive capacity explained: how it handles hot partitions

DynamoDB's adaptive capacity automatically shifts unused throughput to hot partitions, preventing throttling from skewed workloads. It can isolate a hot item onto its own partition, but each partition is capped at 3,000 RCU and 1,000 WCU. The feature works alongside burst capacity, which banks up to 300 seconds of unused throughput for short spikes.