There are various libraries available for general use in DynamoDB. Most of these libraries are community contributed and are maintained by individual users. We are going to start with a couple of interesting libraries made available by Amazon itself. After that, we will also try to list down available community-contributed and language-specific libraries.
The Transaction library has been built on top of the AWS SDK for Java and is only available for Java-based applications. This client library has been provided in order to reduce the development efforts one has to put in to support atomic operations. For those who are not aware of what a transaction means, consider an example where you need to perform two to three operations one after another and commit them only when all the operations are successful. If any of the operations fails in between, the complete process should be failed, reverting all the operations before the failed operation.
The Transaction library...