Yearly/Monthly to Pay-per-Use

After creating a yearly/monthly GeminiDB Cassandra instance, you can change it to pay-per-use for more flexibility, and you can recoup part of what you paid for the subscription.

Suppose you bought a yearly/monthly GeminiDB Cassandra instance at 15:29:16 on April 18, 2023 and changed it to pay-per-use billing at 16:30:00 on May 18, 2023. On the Billing Center > Billing page, bills information is generated as follows:

Yearly/Monthly expenditures for 15:29:16 on April 18 to 23:59:59 on May 18, 2023
Pay-per-use expenditures for 23:59:59 on May 18, 2023 to the end time of pay-per-use billing. A bill was generated every hour.

The pay-per-use billing mode will take effect only after the yearly/monthly subscription has expired. Auto-renewal will not be in effect.

Constraints

Resources such as EIPs that are used by an instance may not support the change with this instance. For details about their billing mode change rules and handling methods, see Table 1.

**Table 1** EIP billing mode change rules
Resource	Billing Mode	Billed By	Bandwidth Type	Change to Pay-Per-Use Billing with GeminiDB Cassandra Instance	Handling Measure
EIP	Yearly/Monthly	Bandwidth	Dedicated	Not supported	Change the EIP to yearly/monthly billing on the EIP console. For details, see Changing EIP Billing Mode.
EIP	Yearly/Monthly	Traffic	Dedicated	Not supported	An EIP billed on a yearly/monthly basis cannot be directly changed to be billed by traffic on a pay-per-use basis. To change this: Change the EIP to be billed by bandwidth on a pay-per-use basis. Change the EIP to be billed by traffic on a pay-per-use basis. For details, see Changing EIP Billing Mode.

Procedure

Log in to the management console.
In the service list, choose Databases > GeminiDB Cassandra API.
On the Instances page, locate the instance whose billing mode you want to change and click More > Change to Pay-per-Use in the Operation column.

Figure 1 Changing from yearly/monthly to pay-per-use
The billing mode of multiple pay-per-use instances can be changed in batches. Perform the following steps:
1. Select the instances whose billing mode you want to change.
2. Click More > Change to Pay-per-Use in the Operation column
On the displayed page, confirm the instance information and click Change to Pay-per-Use. The billing mode will change to pay-per-use after the instance expires. Auto renewal will be disabled after the billing mode of your instances change to pay-per-use. Exercise caution when performing this operation.
After you submit the change, check whether a message is displayed in the Billing Mode column, indicating that the billing mode will be changed to pay-per-use after the subscription expires.
To cancel the change, choose Billing > Renewal to enter the Billing Center. On the Renewals page, locate the instance and click More > Cancel Change to Pay-per-Use.
In the displayed dialog box, click Yes.