Using DynamoDB Streams Vs Updating Data In A Transaction

When to choose between event driven updating vs updating data directly in a transaction

When designing your DynamoDB queries one choice you will often face is whether to update data in transaction or let a change stream event update the data asynchronously.

Take the following scenario:

A user adds a comment to a post and sends a notification item to the author.

In this case, you can go about implementing this feature in 2 ways:

1. Use a transacti…