Simple Notification Service (SNS)
Kinesis + MQ
Databases & Analytics
DynamoDB RCUs and WCUs
  • When you create a new provisioned table in Amazon DynamoDB, you must specify its provisioned throughput capacity.
    • This is the amount of read and write activity that the table can support.
    • DynamoDB uses this information to reserve sufficient system resources to meet your throughput requirements.

Read Capacity Units (RCUs)

  • A read capacity unit represents one strongly consistent read per second, or two eventually consistent reads per second, for an item up to 4 KB in size.
  • For example, you create a table with 10 provisioned read capacity units.
    • This allows you to perform 10 strongly consistent reads per second, or 20 eventually consistent reads per second, for items up to 4 KB.

Write Capacity Units (WCUs)

  • A write capacity unit represents one write per second, for an item up to 1 KB in size.
  • For example, you create a table with 10 write capacity units.
    • This allows you to perform 10 writes per second, for items up to 1 KB in size per second.
Last modified 11mo ago