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Cloud Computing · Foundational

Amazon DynamoDB

AWS fully managed serverless NoSQL key-value and document database delivering single-digit millisecond performance at any scale.

Definition

DynamoDB stores items in tables identified by a partition key and optional sort key, with secondary indexes, TTL, point-in-time recovery, encryption at rest and on-demand or provisioned capacity. Items can be up to 400 KB. It replicates across three AZs in a region automatically.

Example

A mobile game stores player profiles in a DynamoDB table keyed by PlayerId.

Exam tip

DynamoDB is the default answer for serverless, massively scalable key-value workloads; it does not support complex joins.

Related terms