AWS Certified Data Analytics Specialty 2021 – Hands-On - DynamoDB RCU and WCU - Throughput

The video tutorial explains the two capacity modes in DynamoDB: provisioned and on-demand. It covers the details of provisioned mode, including read and write capacity units (RCU and WCU), auto-scaling, and burst capacity. The tutorial also delves into the calculations for WCU and RCU, highlighting the differences between strongly consistent and eventually consistent reads. It further explains how DynamoDB partitions data and the implications of hot partitions. Finally, the on-demand mode is discussed, emphasizing its flexibility and higher cost compared to provisioned mode.

What are strongly consistent reads and eventually consistent reads?

How do you calculate the number of partitions in DynamoDB?

What is the impact of item size on WCU and RCU consumption?

When should you use on-demand capacity mode in DynamoDB?