An Amazon Aurora DB cluster can have a maximum of 15 Aurora Replicas.
The maximum size of a single item in an Amazon DynamoDB table is 400 KB.
The main difference between DAX and ElastiCache is their scope and integration.
The primary benefit of Amazon DynamoDB Accelerator (DAX) is that it provides a 10x performance boost, reducing DynamoDB's response times from single-digit milliseconds to microseconds for read-heavy workloads.
DynamoDB Streams is a powerful feature that captures a time-ordered sequence of every modification made to items in a DynamoDB table. It essentially acts as a "transaction log" that records when an item is created, updated, or deleted.