dynamodb-transactions

Amazon DynamoDB Client-Side Transactions is a Java library that enables developers to perform atomic writes and isolated reads across multiple items and tables when building high-scale applications on Amazon DynamoDB. It provides a client-side implementation of transactional operations, mimicking the DynamoDB API while ensuring data consistency in distributed environments.

Key Features

• Atomic Writes — Write operations to multiple items either all succeed or all fail, ensuring data integrity.
• Isolated Reads — Read operations to multiple items are protected from interference by other concurrent transactions.
• Sweepers — Convenience methods to clean up "stuck" transactions by sweeping the in-flight transaction state stored in a separate table.
• Easy to Use — Mimics the Amazon DynamoDB API using familiar request and response objects from low-level APIs like PutItem, UpdateItem, DeleteItem, and GetItem.
• Table Helpers — Includes utility methods for creating tables and waiting for them to become ACTIVE.

Philosophy

The library is designed to simplify complex multi-item operations on DynamoDB by providing a client-side transactional layer that maintains atomicity and isolation, ensuring developers can build reliable applications without server-side transaction support.