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5Troubleshooting and Optimization

Practice questions →Glossary →
  • 5.1Observability with CloudWatch

    Understand observability basics: CloudWatch Logs / Logs Insights, metrics and alarms, and custom metrics. The starting point for "Troubleshooting and Optimization" in DVA-C02.

  • 5.2Distributed Tracing and Debugging with X-Ray

    Understand debugging with AWS X-Ray: distributed tracing (request path and per-segment latency), pinpointing bottlenecks/errors, and the service map.

  • 5.3Optimizing Performance and Cost

    Understand optimization: caching (ElastiCache/DAX/CloudFront), Lambda tuning (memory/concurrency/cold-start mitigation), and efficient data access (Query, retries with exponential backoff, pagination).