与 Amazon DynamoDB 全局表的多区域强一致性.pdf

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1、 2025,Amazon Web Services,Inc.or its affiliates.All rights reserved.2025,Amazon Web Services,Inc.or its affiliates.All rights reserved.2025,Amazon Web Services,Inc.or its affiliates.All rights reserved.Amrith KumarSenior Principal EngineerAmazon Web ServicesSomu PerianayagamSenior Principal Engineer

2、Amazon Web ServicesMulti-Region strong consistency with Amazon DynamoDB global tablesD A T 4 4 0 2025,Amazon Web Services,Inc.or its affiliates.All rights reserved.Data close to their end users across the world High availability and Business continuity Low-latency access regardless of where users co

3、nnect Scalable architectures that operate across multiple RegionsWhy Multi-Region Data Matters 2025,Amazon Web Services,Inc.or its affiliates.All rights reserved.Why Multi-Region Data Is HardRegions are physically far apartNetwork round-trip times are measured in tens to hundreds of millisecondsWrit

4、es may occur in multiple Regions simultaneouslyApplications must reason about propagation,ordering,and failover 2025,Amazon Web Services,Inc.or its affiliates.All rights reserved.Local,independent writes provide:Low latencyConsistent performanceHigh throughputNo cross-Region dependenciesMulti-Region

5、 Trade-offsPredictable Performance vs.ConsistencyCoordinated global writes provide:Deterministic ordering across RegionsStronger cross-Region read behaviorStrictly serializable reads and writes globally 2025,Amazon Web Services,Inc.or its affiliates.All rights reserved.Multi-Region Trade-offsRPO vs.

6、RTO 2025,Amazon Web Services,Inc.or its affiliates.All rights reserved.Agenda01 Amazon DynamoDB consistency model02 Multi-Region consistency use cases03 How Async&MRSC Global Tables Work04 Demo:How MRSC works 2025,Amazon Web Services,Inc.or its affiliates.All rights reserved.Strong consistency Event