How to auto scale Amazon DynamoDB throughput

Question

DynamoDB doesn’t provide inbuilt capabilities to auto scale throughput based on Dynamic Load. It provides API to scale up or down throughput. But i am being charged hourly basis for provisioned read & write throughput.

What are the different ways to alter the throughput of dynamodb and achieve cost-saving benefits  as well?

Answer 1

There are different tools using which you can achieve your use case. One such tool is Dynamic DynamoDb. Some key points that you should keep in mind when you are scaling DynamoBB are:

1. You will be billed for allocated throughput, whether you're actually using it or not.
2. When you scale up, Dynamo may allocate new partitions for you - but it won't remove them when it scales down. This can result in an unexpected hot hash key problem where you have a lot of partitions but very low throughput on each of them.

For more details, you can refer to this documentation by AWS.