DynamoDB Essentials:

  • DynamoDB is a fully -managed, NoSQL database service provided by AWS.

  • It is similar to MongoDB, but is a home-grown AWS solution.

  • Is schemaless, and uses a key-value store.

  • You specify the required throughput capacity, and DynamoDB does the res (being fully-managed).

  • Being fully-managed means:

    • Service manages all provisioning (and scaling) of underlying hardware.

    • Fully distributed, and scales automatically with demand and growth.

    • Built as a fault tolerant highly available service.

      • on the back end, it fully synchronizes the data across all of the availability zones within the region you created the DynamoDB tables in.

  • DynamoDB also easily integrates with other AWS services, such as Elastic MapReduce.

    • Can easily move data to a hadoop cluster in Elastic MapReduce.

  • Popular use cases include:

    • IOT (storing meta data).

    • Gaming (storing session information, leaderboards).

    • Mobile (storing user profiles, personalization).

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