Single Table Design + Spring Boot

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Demo project for Spring Boot + DynamoDB Single Table Design

Tecnologies

• Java 17
• Spring Boot
• DynamoDb

Libs

• AWS Java SDK Dynamodb
• Dynamodb Enhanced

Table

Access tb_comics in ./environment/dynamodb/tables.json

Get Started

Create Table in DynamoDb simulator using Localstack.

docker-compose up -d --build

• Access DynamoDb Admin: http://localhost:8001/

Request Examples

• GET - http://localhost:8080/character
• GET - http://localhost:8080/character/profile/{nickname}
• GET - http://localhost:8080/comics
• GET - http://localhost:8080/comics/{nickname}

curl --location --request GET 'http://localhost:8080/character/profile/greenlantern'

Postman Collection: Comics.postman_collection.json

Notes

• You can't use begin_with with PartitionKey, you can only use on the SortKey.
• Primary keys in DynamoDB can be either simple or composite.
  • Simple primary keys are consist of a partition key and no sort key.
  • Composite primary keys have both a partition key and a sort key.

Article

• [PT-BR] DynamoDB Single-Table Design com Spring Boot

References

• The What, Why, and When of Single-Table Design with DynamoDB
• Amazon DynamoDB single-table design using DynamoDBMapper and Spring Boot
• Single-table vs. multi-table design in Amazon DynamoDB

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Developed by Jean Jacques Barros