The basic services of Alibaba Cloud CDN support the pay-by-data-transfer and pay-by-peak-bandwidth metering methods.You can select a metering method based on your business requirements. This topic describes the metering methods and considerations for the basic services of Alibaba Cloud CDN.

Note By default, pay-by-data-transfer meters the amount of outbound data transfer on L1 nodes and pay-by-peak-bandwidth metersthe peak outbound bandwidth on L1 nodes.

Pay-by-data-transfer (default)

Use scenario Billing rule
The network traffic fluctuates and the bandwidth usage spikes. The daily bandwidth usage is lower than 30%.
  • Description: You are charged based on the amount of monthly outbound data transfer on the edge nodes based on tiered pricing strategies.
  • Billable item: data transfer.
  • Billing method: pay-as-you-go or subscription resource plans.
  • Billing cycle: You are charged on an hourly basis. A bill is issued about 3 to 4 hours after the end of a billing cycle. The time when bills are issued is determined by the system.

Pay-by-peak-bandwidth

Notice If you want to use the pay-by-peak-bandwidth metering, you must submit a ticket or contact Alibaba Cloud customer service. To use this metering method, the peak bandwidth value within the last 30 days must exceed 5 Gbit/s.
Use scenario Billing rule
The network traffic is relatively flat and the daily bandwidth usage exceeds 30%.
  • Description: You are charged based on the daily peak bandwidth values. A bandwidth value is collected every 5 minutes. A total of 288 values are collected every day. The highest bandwidth value is used as the daily peak bandwidth value.
  • Billable item: peak bandwidth.
  • Billing method: pay-as-you-go.
  • Billing cycle: You are charged on a daily basis. The amount due is automatically deducted from your account balance. The bill of the current day is issued and the amount due is deducted after 00:00 on the following day. The time when bills are issued is determined by the system.

Considerations

  • The actual amount of data transfer that is billed is higher than the amount of data transfer recorded in the log. The amount of data transfer that is recorded in the log is equal to the amount of data transfer that is captured at the application layer. However, an additional amount of data is consumed to transmit the additional bytes inserted into TCP or IP packet headers and to retransmit TCP packets. Therefore, the actual amount of data transfer is higher than the amount of data transfer that is captured at the application layer. For more information, see Why is the actual billed network traffic different from the network traffic reported by the logging feature?.
  • In most cases, a bill is issued about 3 to 4 hours after the end of a billing cycle. The time when bills are issued is determined by the system.