WCU: Write Capacity Units
Explore how DynamoDB uses write capacity units (WCUs) to allocate resources for writing data. Learn to calculate WCUs based on record size, understand standard and transactional write consistency, and use this knowledge to design efficient and scalable DynamoDB tables.
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DynamoDB requires the capacity to execute tasks related to writing. This capacity is called write capacity units (WCUs). In this lesson, we’re going to learn what they are, how to calculate them and dive into some considerations about them to be aware of when designing a system.
What is a WCU?
A write capacity unit (WCU) is the measurement unit used by DynamoDB to provide the resources that it will use to support writes to our table. The measurement unit is defined by record size and time. ...