The basic services of Alibaba Cloud CDN supports 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.

Pay-by-data-transfer (default)

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 daily outbound data transfer of CDN edge nodes based on tiered pricing strategies.
  • Billable item: data transfer.
  • Payment method: pay-as-you-go and subscription (resource plans).
  • Billing cycle: You are charged on an hourly basis. A bill is issued about 3 hours after a billing cycle ends. 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.
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.
  • Payment method: pay-as-you-go.
  • Billing cycle: You are charged on a daily basis. The amount due is deducted from your account balance accordingly. 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.

Usage notes

The amount of data transfer that is actually billed is higher than the amount of data transfer recorded in logs. The amount of data transfer recorded in CDN logs equals the amount of data transfer captured at the application layer. However, an extra 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 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?