All Products
Search
Document Center

Server Load Balancer:SLB billing

Last Updated:Mar 25, 2025

Different types of Server Load Balancer (SLB) instances have different billing rules. This topic describes the billing rules for Application Load Balancer (ALB), Classic Load Balancer (CLB), and Network Load Balancer (NLB) instances.

Billing of different types of SLB instances

Service

References

ALB

NLB

CLB

Comparison of billing rules

This section describes the billing methods and billable items of ALB, NLB, and CLB. We recommend that you view and learn about the billing methods and billable items of each service before you use the services.

ALB

image

NLB

image

For more information about the billing rules of pay-as-you-go NLB instances, see NLB billing rules.

CLB

The following figure shows the billable items of CLB. For more information about the billing rules of pay-as-you-go CLB instances, see Pay-as-you-go.

image

The following table compares the billing rules and usage calculations of Load Balancer Capacity Units (LCUs) of ALB, NLB, and CLB.

Service

LCU unit price

(USD/LCU/hour)

LCU definition

References

ALB

0.007

An ALB LCU provides the following resources:

  • 25 new connections per second

  • 3,000 concurrent connections (sampled every minute)

  • 1 GB of data transfer per hour

  • Processing of 1,000 rules per hour

    Note

    Forwarding rules, lines of code in AScript, and additional certificates have the same quota, which is 25.

LCU fees

NLB

0.005

For TCP data transfer, an NLB LCU provides the following resources:

  • 800 new connections per second

  • 100,000 concurrent connections (sampled every minute)

  • 1 GB of data transfer per hour

For UDP data transfer, an NLB LCU provides the following resources:

  • 400 new connections per second

  • 50,000 concurrent connections (sampled every minute)

  • 1 GB of data transfer per hour

For SSL over TCP data transfer, an NLB LCU provides the following resources:

  • 50 new connections per second

  • 3,000 concurrent connections (sampled every minute)

  • 1 GB of data transfer per hour

NLB billing rules

CLB

0.007

For TCP data transfer, a CLB LCU provides the following resources:

  • 800 new connections per second

  • 100,000 concurrent connections (sampled every minute)

  • 1 GB of data transfer per hour

For UDP data transfer, a CLB LCU provides the following resources:

  • 400 new connections per second

  • 50,000 concurrent connections (sampled every minute)

  • 1 GB of data transfer per hour

For HTTP or HTTPS data transfer, a CLB LCU provides the following resources:

  • 25 new connections per second

  • 3,000 concurrent connections (sampled every minute)

  • 1 GB of data transfer per hour

  • Processing of 1,000 rules per hour

    Note

    The number of rule evaluations is affected by the number forwarding rules. The free quota on forwarding rules is 25.

Specification fee and LCU fee