Key-value database

Amazon DynamoDB

Serverless key-value and document database from AWS.

A fully managed NoSQL database with single-digit-millisecond reads at any scale. Tables are designed around partition and sort keys, with global secondary indexes, streams, transactions and on-demand or provisioned capacity.

Data model: Key-value
Vendor: Amazon Web Services
License: Commercial (managed service; free tier)
Articles: 1

Amazon DynamoDBIntermediate

How do I query DynamoDB by an attribute that isn't the key?

Scan with a FilterExpression still reads and bills every item. Use GSIs, sparse indexes and composite sort keys instead, and know when to send queries elsewhere.

#data-modeling#indexing#nosql

Tanishk · 8 min

Oct 21, 2026