What is the purpose of secondary indexes in DynamoDB?
The purpose of secondary indexes in Amazon DynamoDB is to allow efficient querying of data based on attributes other than the table's primary key.
While DynamoDB tables are primarily indexed based on their primary key (either a partition key or a composite partition key and sort key), secondary indexes provide additional flexibility for querying data by other attributes.
Here are the main purposes and benefits of secondary indexes in DynamoDB :
* Query Flexibility
* Improved Query Performance
* Support for Different Access Patterns
* Avoidance of Full Table Scans
* Optimized Data Retrieval
* Reduced Costs and Latency
