Update DynamoDB item using DynamoDBMapper in Java

Question

How can I update DynamoDB item using DynamoDBMapper?

I have multiple processes, using the DynamoDB table, thus, get + save will create inconsistency. I can not find the

Answer 1

To have consistency in your dynamo db write operations you will have to choose one option between Optimistic locking and Conditional writes.

Here are the links to AWS documentation which may help you;

http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/DynamoDBMapper.OptimisticLocking.html

http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Expressions.SpecifyingConditions.html