DynamoDB

Question 1

What is the recommended capacity mode Dynamodb for unpredictable workloads?

Answer 1

on demand

Question 2

What causes a DynamoDB hot partition?

Answer 2

many requests that target only a few partitions

Question 3

How many Dynamodb RCU per 4KB

Answer 3

4 KB |1 RCU |1 strongly consistent read request per second.
4 KB |1 RCU |2 eventually consistent read requests per second
4 KB| 2 RCU |1 Transactional read requests per second

Question 4

How many Dynamodb WCU per 1KB

Answer 4

1 KB | 1 WCU |1 standard write request per second.
1 KB | 2 WCU |1 Transactional write requests per second

Question 5

What are the DynamoDb encryption options?

Answer 5

• AWS owned key (default)
• customer managed key
• AWS managed key

PS: Encryption can’t be disabled!