DynamoDB placement uses a variation for partitioning and performs what kind of rebalancing?

DynamoDB placement uses a variation for partitioning and performs what kind of rebalancing?

• A. It uses fixed partitioning with manual rebalance.
• B. It ignores replication.
• C. It moves data on every read.
• D. It uses a variation for partition placement and performs automatic adaptive rebalancing.

Answer: (D)

DynamoDB manages data distribution across partitions automatically and adapts as workloads change. It uses a flexible partition placement strategy to spread data and throughput across multiple partitions, and its Adaptive Capacity automatically detects hot partitions and rebalances by adding or migrating partitions to keep performance steady without user intervention. This is why the statement describing a variation for partition placement along with automatic adaptive rebalancing best captures how DynamoDB handles partitioning. The other ideas don’t fit: partitioning isn’t fixed and manually rebalanced, and DynamoDB does not ignore replication or move data on every read—replication exists for durability, and rebalancing happens automatically rather than on every access.

DynamoDB manages data distribution across partitions automatically and adapts as workloads change. It uses a flexible partition placement strategy to spread data and throughput across multiple partitions, and its Adaptive Capacity automatically detects hot partitions and rebalances by adding or migrating partitions to keep performance steady without user intervention. This is why the statement describing a variation for partition placement along with automatic adaptive rebalancing best captures how DynamoDB handles partitioning.

The other ideas don’t fit: partitioning isn’t fixed and manually rebalanced, and DynamoDB does not ignore replication or move data on every read—replication exists for durability, and rebalancing happens automatically rather than on every access.