Evolve your Amazon DynamoDB table’s data model
Database Blog
This article discusses how to evolve the data model of an Amazon DynamoDB table without causing service interruptions. It focuses on two main techniques for updating the data model:
- Adding new attributes to existing tables
- Adding new entities to tables
Key best practices for updating DynamoDB tables include:
- Carefully projecting attributes to new indexes
- Documenting data model changes
- Implementing data integrity checks in the application
- Minimizing the number of indexes to control costs
- Avoiding analytical access patterns in DynamoDB
The article provides code examples demonstrating how to add new attributes, create global secondary indexes, and use transaction writes to maintain data consistency when updating the table's structure.
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