When you use the Edge Load Balancer (ELB) feature in Edge Node Service (ENS), you are charged for ELB instances that you created based on instance types.
Pricing for ELB instances
An ELB instance has the following metrics: maximum number of connections, connections per second (CPS), and queries per second (QPS). The metric values vary based on the instance type. For more information, see Instance types and pricing. The following table describes the unit prices of different instance types.
Type | Unit price (USD/month) |
Lite (elb.s1.small) | 7.5 |
Standard I (elb.s2.small) | 26 |
Standard II (elb.s2.medium) | 52 |
Advanced I (elb.s3.small) | 104 |
Advanced II (elb.s3.medium) | 166 |
Billing
You are charged for ELB based on the instance type. The following table describes the billing of ELB.
Item
Description
Billing method
Pay-as-you-go
Billing cycle
Monthly
Billing rule
You are charged the sum of the fees for all ELB instances configured in the current month.
Fee of an ELB instance = Unit price × Effective factor.
NoteEffective days: the number of days from the day when an ELB instance is created to the day when the ELB instance is released or to the end of the month if the ELB instance is not released in the month. Examples:
Example 1: If an ELB instance is created on June 5, 2024 and is released on June 25, 2024, the number of effective days in June 2024 is 21.
Example 2: If an ELB instance is created on June 5, 2024 and is used till the end of the month, the number of effective days in June 2024 is 26.
Effective factor = Effective days/Total number of days in the current month. For example, the total number of days in June 2024 is 30. If a bill for June 2024 covers 26 valid days, the effective factor is 26/30 = 0.86666667.
If you associate an EIP with an ELB instance, you are charged the Internet traffic fee by the EIP. For more information, see Billing for EIPs.
Billing example
Scenario: A user creates an ELB instance of the Standard I (elb.s2.small) type on June 5, 2024. The instance is used till the end of June 2024. The number of effective days for the instance in June 2024 is 26.
Billing:
Effective factor: 26/30 = 0.86666667.
Unit price: USD 26/month for Standard I (elb.s2.small) instances.
Fee of the instance in June: 26 × 0.86666667 = USD 22.53.