This topic describes how AnalyticDB for MySQL clusters are billed when you change cluster configurations.
Subscription
Upgrade configurations
Upgrade fee = (Daily unit price after upgrade/24 hours/3,600 seconds) × Remaining subscription period - (Daily unit price before upgrade/24 hours/3,600 seconds) × Remaining subscription period.
If the remaining subscription period is less than 365 days, the daily unit price is calculated as the monthly unit price divided by 30.
If the remaining subscription period is greater than or equal to 365 days, the daily unit price is calculated as the annual unit price divided by 365.
Billing of configuration changes is accurate to the second.
Downgrade configurations
For information about refund rules for downgrade, see Rules for unsubscribing from resources.
Pay-as-you-go
This billing method lets you use resources before you pay for them. You are billed on an hourly basis based on the upgraded or downgraded specifications of your cluster.
References
For more information about configuration changes, see Configuration changes and resource scaling.