dynamodb

DynamoDB single-table design models multiple entities in one table by carefully defining partition and sort keys to ensure all application read patterns are supported by efficient key-based queries. This approach prevents the need for multiple tables and complex joins.

DynamoDB throttling and empty query results often stem from hot partitions caused by uneven key distribution or incorrect index selection. Diagnose access patterns and apply mitigation tactics like better key distribution and retry strategies to resolve these operational failures.

DynamoDB GSIs support querying across alternative partition keys and are updated asynchronously, while LSIs are limited to querying the same partition key with different sort keys. Choose GSIs for flexible access patterns and LSIs for strongly consistent reads within a single partition.

DynamoDB TTL automatically deletes expired items from your table without consuming write capacity. Define a specific attribute as the TTL timestamp to let the background process remove expired records, efficiently supporting application lifecycles and reducing storage costs.

DynamoDB hot partitions occur when access is concentrated on a single partition key. Mitigate this by improving key distribution across partitions and adjusting capacity modes to handle throughput throttling, ensuring reliable performance at scale.