AWS Developer Associate DVA-C02 — Study Guide
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This guide covers each DVA-C02 domain in depth. Pick a domain to go deep, or work through them in order.
The domains
- Serverless & AWS Lambda — Challenge: Reduce cold-start latency for user-visible uploads, protect and rotate the third-party API key, and enable zero-downtime safe rollbacks
- Amazon API Gateway & App Integration — Challenge: After a recent feature rollout, production API latency increased and some checkout requests return 502/504 intermittently; developers need
- Amazon DynamoDB & NoSQL Design — Challenge: Add an efficient query path for photographerId + timestamp range without table redesign, ensure downstream Lambda processes stream records
- CloudFormation & Infrastructure as Code (SAM, CDK) — Challenge: Deploy the same CloudFormation/SAM/CDK stack across multiple accounts and ensure Lambda code artifacts are available in each target
- Deployment & CI/CD (CodePipeline, CodeBuild, CodeDeploy, Elastic Beanstalk, Containers) — Challenge: A developer must add a safe, automated pipeline to deploy a new checkout service container with canary traffic shifting and automated
- Security, IAM, KMS & Secrets Management (Cognito, Secrets Manager, SSM) — Challenge: Securely provide short-lived, auditable access to production images for external auditors, ensure application secrets are rotated and
- Monitoring, Logging & Debugging (CloudWatch, X‑Ray, Tracing, Alarms) — Challenge: Capture near-real-time device/message counts per minute, ensure end-to-end tracing for slow requests, and create a low-noise alarm that
- Storage, Amazon S3, CloudFront & File Systems (EFS, FSx) — Challenge: Implement secure private object delivery, dynamic transformation without duplicating storage, and a low-cost strategy for cache
- Databases & Caching (RDS, Aurora, ElastiCache, Timestream, Proxy) — Challenge: During sales spikes, Lambda functions exhaust DB connections and the catalog needs microsecond reads; developers must preserve security
- Messaging, Streaming & Event-driven Architectures (SNS, SQS, Kinesis, EventBridge, Step Functions) — - SNS: high-throughput fan-out, no ordering, Publish/Subscribe, use MessageAttributes for routing. - SQS Standard: at-least-once, best-effort
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