DynamoDB – How to Move Out?

Migrating from Amazon DynamoDB involves a series of methodical steps to ensure data consistency and continuity, with considerations for aspects like throttling, hard limits, and cost being primary motivators for organizations to seek alternatives. The process typically involves capturing all changes to the source database, copying data to the target database, and replaying any changes to synchronize both databases. Dual-writing is discussed as a potential strategy, but its applicability depends on factors like TTL settings. Back-filling historical data can be approached through methods such as ETL, table scans, or exporting to Amazon S3, each with its own trade-offs in terms of complexity, cost, and time. DynamoDB Streams and tools like AWS Lambda and the DynamoDB Streams Kinesis Adapter allow for capturing ongoing changes to ensure synchronization between databases. The article emphasizes the importance of careful planning and understanding of the migration process, highlighting various AWS tools and methods to facilitate a seamless transition from DynamoDB to other database systems.