DVA-C02 - Development with AWS Services - Section 1.7
Model data in Amazon DynamoDB using primary keys, high-cardinality partition keys and secondary indexes, and choose between query and scan operations.
Design Amazon DynamoDB table schemas using partition keys with high cardinality to distribute load evenly, and define global secondary indexes to support access patterns not served by the base table. Choose Query over Scan whenever possible and understand the cost and consistency implications of each.
Partition keyGlobal secondary indexQuery versus ScanDynamoDB data modelling
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