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Lesson 08: DNS & Traffic Management: Route53 & Global Accelerator

Multi-Region Platform Engineering: AWS, Kubernetes, and Aurora at Scale​

Episode 08 of 16 | Duration: 14 minutes

Target Audience: Senior platform engineers, SREs, DevOps engineers (5+ years experience)

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What You'll Learn​

  • Route53 health check mechanics: 30-second intervals, failover detection, DNS propagation delays
  • DNS TTL trade-offs: Low TTL (60s) = faster failover but more DNS queries, high TTL (300s) = lower cost but slower
  • Global Accelerator architecture: Anycast IP addresses, AWS edge locations, TCP/UDP optimization
  • Subsecond routing with anycast: Traffic routed to nearest healthy endpoint automatically
  • Cost comparison: Route53 ($0.50/health check) vs Global Accelerator ($18/month/endpoint)

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