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DynamoDB

DynamoDB

  • What it is: A Serverless, Key-Value NoSQL database. It is famous for single-digit millisecond latency at any scale. It powers shopping carts, gaming leaderboards, and high-traffic web apps.

  • Data Engineer Note: It is not for analytics. You cannot run SELECT * FROM users efficiently. You use it for high-speed lookups (e.g., "Get User X's Profile").

  • Equivalents:

    • GCP: Firestore (or Cloud Bigtable for massive scale)

    • Azure: Azure Cosmos DB

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