The following figure shows the approximate fee proportion for each billable item of a PolarDB cluster.
Table 1. Billable items
Billable item | Description | Supported billing methods |
Compute nodes | Compute nodes include primary and read-only nodes. The fees for compute nodes vary based on the region, node specifications, and usage duration.
| Pay-as-you-go Subscription
|
Storage space | Storage space is used to store data files, index files, log files (online and archived logs), and temporary files. You are charged for the storage space that you use. The fees for storage space vary based on the data volume and storage duration.
| |
Backup storage space (charged only when the free quota is exceeded) | |
Note The subscription billing method is not available for backup storage space. If you purchase a subscription cluster, the subscription applies only to compute nodes. You may still be charged for other items, such as backup storage space. For information about the billing rules for data backups, see Pay-as-you-go rules.
|
SQL Explorer (optional) | SQL Explorer is a value-added service that provides features such as security audit and performance diagnostics. If you enable this feature, you are charged for the storage of its audit logs. The fees for SQL Explorer vary based on the storage capacity and retention period of audit logs.
|
Note The subscription billing method is not available for SQL Explorer. If you purchase a subscription cluster, the subscription applies only to compute nodes. You may still be charged for other items, such as fees for SQL Explorer. For information about the billing rules for SQL Explorer, see SQL Explorer billing rules (optional).
|