Amazon DynamoDB now supports multi-attribute composite keys in global secondary indexes

This article announces that Amazon DynamoDB now supports multi-attribute composite keys in global secondary indexes, enabling more flexible data modeling and querying.

• Partition and sort keys now support up to four attributes each (eight total)
• Eliminates need for manual value concatenation into synthetic keys
• No data backfilling required when adding new indexes
• Multi-attribute partition keys improve data distribution and uniqueness
• Multi-attribute sort keys enable flexible left-to-right conditional querying
• Available at no additional charge in all AWS Regions
• Accessible via AWS Console, CLI, SDKs, and DynamoDB API

This enhancement simplifies DynamoDB schema design by allowing direct use of multiple attributes as keys, reducing operational complexity and supporting diverse access patterns.