Design for New Solutions IV
Prepare yourself for the AWS Certified Solutions Architect Professional (SAP-C02) exam with advanced questions on global low-latency databases, HPC architectures, shared file systems, analytics optimization, and cost-efficient batch processing.
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Question 36
A travel company is building a global shopping cart service. Users in North America and Europe must read and write locally with single-digit millisecond latency, and the service must remain available if one Region fails. The data model is key-value and can tolerate last-writer-wins conflict handling with application safeguards. Which design is best?
A. Use Amazon Aurora Global Database with one writable primary Region and a secondary Region, and route all writes to the primary Region to preserve relational consistency.
B. Deploy stateless compute in each Region, use DynamoDB global tables for active-active Regional reads and writes with asynchronous replication, design high-cardinality partition keys, use conditional writes or idempotency keys to handle duplicates and conflicts, and route users with Amazon Route 53 latency-based routing or AWS Global Accelerator.
C. Store cart state as objects in Amazon S3 with Cross-Region Replication, and use Amazon Route 53 simple routing to send all users to the closest object replica.
D. Use Amazon RDS Multi-AZ in one Region with read replicas in the second Region, and rely on Multi-AZ failover for Regional survivability.
Question 37
A social application needs a global user preference and session metadata store. Access is key-value, traffic is ...