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Lesson 10: Data Consistency Models: CAP Theorem in Production

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

Episode 10 of 16 | Duration: 13 minutes

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

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What You'll Learn​

  • CAP theorem reality: You choose two of Consistency, Availability, Partition tolerance
  • Aurora's CP model: Strong consistency, read-only during partition, acceptable for most transactional workloads
  • DynamoDB's AP model: High availability, eventual consistency, last-writer-wins conflict resolution
  • Split-brain scenarios: Two regions think they're primary, data divergence, reconciliation nightmare
  • Prevention strategies: Quorum consensus, human approval gates, resource fencing

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