Azure DocumentDB minimum billing time

1
votes

DcoumentDB has a minimum billing time of 1 hour.

How much would the following cost?

  • I create a collection (400Ru/s) at time 01:00
  • I upgrade the collection 1000Ru/s to a total of 1400Ru/s at time 01:30
  • I downgrade the collection back to 400Ru/s at time 02:15
  • I delete the collection at 02:45

Will I be charged 400Ru/s for 2 hours + 1000Ru/s for 1 hour

Or

Will I be charged 400Ru/s + 1000Ru/s for 2 hours?

I ask as it would depend on how the billing clock works, I could see it being the latter as I was at 1400Ru/s at 01:00 & 02:00 hours. Although I only used the upgrade for less than 1 hour.

1
azureazure-cosmosdb

1 Answers

2
votes

Great question! Based on the FAQs provided here, you will be charged for 1400RU/s for both hours. If I am understanding the FAQs correctly, you will be charged the maximum RU/s provisioned in a clock hour (i.e. between 1:00 and 2:00, 2:00 and 3:00 etc.)

From the documentation link:

What if my container is active for less than an hour?

You are billed the flat rate for each hour the container exists, regardless of usage or if the container is active for less than an hour. For example, if you create a container and delete it 5 minutes later, your bill will reflect a charge for 1 unit hour.

When does the billing rate change after I upgrade a container?

If you define your own performance for a container and you upgrade at 9:30AM from 400 RUs to 1,000 RUs and downgrade at 10:45AM back to 400 RUs, you will be charged for two hours of 1,000 RUs.