Database
CoreAmazon DynamoDB
Explicit managed-database scaling, backup, and restore context.
Key points
- DynamoDB operations include capacity mode and scaling, hot-key diagnosis, backup, and restore decisions.
Best-known use cases
- D1.3, D2.1, and D2.2: correct measured DynamoDB throttling or recover table data with the applicable managed control.
What candidates often confuse it with
- DynamoDB capacity cannot repair a concentrated partition-key pattern, and DAX adds caching rather than table capacity.
Key takeaway
Separate total table capacity, hot partitions, cache behavior, and recovery state before changing DynamoDB settings.
Related services
- Amazon Aurora
- Amazon Aurora Serverless v2
- Amazon DynamoDB Accelerator (DAX)
Relevant exam tasks
- D1.3 — Task 1.3: Implement performance optimization strategies for compute, storage, and database resources.
- 1.3.1 — Optimize compute resources and remediate performance problems by using performance metrics, resource tags, and AWS tools.
- D2.1 — Task 2.1: Implement scalability and elasticity.
- 2.1.1 — Configure and manage scaling mechanisms in compute environments.
- D2.2 — Task 2.2: Implement highly available and resilient environments.
- 2.2.1 — Configure and troubleshoot Elastic Load Balancing (ELB) and Amazon Route 53 health checks.