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Lesson 06: DynamoDB Global Tables: Active-Active Replication

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

Episode 06 of 16 | Duration: 15 minutes

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

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What You'll Learn​

  • DynamoDB Global Tables architecture: Active-active writes, eventually consistent, sub-second replication
  • Conflict resolution strategies: Last-writer-wins (LWW) default, version vectors, application-level resolution
  • Replication lag characteristics: 1-3 seconds typical, can spike during regional issues
  • Cost analysis: Write capacity units duplicated per region, on-demand pricing multiplier
  • Real-world use cases: Session storage, user profiles, shopping carts work well; financial transactions require caution

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