DynamoDB

DynamoDB is a fully managed, serverless NoSQL database service provided by Amazon Web Services (AWS). It provides fast and predictable performance with seamless scalability. DynamoDB is a key-value and document database that uses SSD storage and is spread across three geographically distinct data centers. It is highly available, with replication across multiple availability zones. DynamoDB is a great choice for applications that need very low latency access to data, the ability to scale storage and throughput up or down as needed, and high availability and durability of data.

Let’s understand some aspects of the DynamoDB design that are useful as system design practitioners. Some of our design principles of a generic key-value store are directly applicable to DynamoDB.

No fixed schema

DynamoDB aims to have no fixed schema in its design. This allows DynamoDB to support a multitude of applications and use cases. To meet the diverse needs of a broad customer base...