Limits

Last Updated: Sep 27, 2017

ResourceLimitException
ECS instances added to a Server Load Balancer instance Must have at least one ECS instance, and the region must be the same for the ECS instance and Server Load Balancer instance. No
Types of a Server Load Balancer instance Internet/intranet No
Billing methods By traffic or bandwidth No
Public bandwidth range for a Server Load Balancer instance (Pay by bandwidth) 1 to 5000 MB,default is 1 MB No
Default quota of Pay-As-You-Go instances 60 Submit a ticket to apply for more
Restrictions on Server Load Balancer instance name The name must be 1-80 characters in length including letters, digits, hyphens (-), backslashes (/), periods (.) and underscores (_). No
The number of listeners added in a Server Load Balancer instance 50 No
The number of the domain/URL forwarding rules added to a layer-7 listener 20 Yes
Supported protocols HTTP/HTTPS/TCP/UDP No
Front-end/backend port range used in a listener 1 to 65535 No
Front-end/backend port range used in a listener (Financial Cloud) 80, 443, 2800 to 3300, 5000 to 10000, 13000 to 14000 No
Supported scheduling algorithms Round robin, weighted round robin (WRR), weighted least connections (WLC) No
Cookie processing in HTTP session persistence insert/server,default is insert No
Cookie timeout for HTTP protocol 1 to 86400, default is 3600 No
Cookie name restrictions

The name can be 1 to 200 characters in length, and must comply with RFC2965.

It can only contain ASCII English letters and digits.

It cannot contain commas, semicolons, spaces, or begin with a dollar symbol ($).

No
Health check port for HTTP protocol 1 to 65,535 (default is the backend server port) No
Health check domain for HTTP protocol The length can be 1 to 80 characters, and include letters, digits, hyphens (-), and periods (.). No
Health check URI for HTTP protocol The URU must be 1-80 characters in length including letters, digits, hyphens (-), backslashes (/), periods (.), ampersands (&), question marks (?), and number signs (#). No
Health check timeout for HTTP protocol 1 to 300s, default is 5 No
Health check interval for HTTP protocol 1 to 50s, default is 2 No
Healthy threshold for HTTP protocol health check 2 to 10, default is 3 No
Unhealthy threshold for HTTP protocol health check 2 to 10, default is 3 No
Session timeout for TCP protocol 1 to 3600s No
Health check port for TCP protocol 1 to 65,535 (default is the backend server port) No
Health check timeout for TCP protocol 1 to 300s, default is 5 No
Health check interval for HTTP protocol 1 to 50s, default is 2 No
Healthy threshold for TCP protocol health check 2 to 10, default is 3 No
Unhealthy threshold for TCP protocol health check 2 to 10, default is 3 No
Health check port for UDP protocol 1 to 65,535 (default is the backend server port) No
Health check timeout for UDP protocol 1 to 300s, default is 10 No
Health check interval for UDP protocol 1 to 50s, default is 10 No
Healthy threshold for TCP protocol health check 2 to 10, default is 3 No
Unhealthy threshold for UDP protocol health check 2 to 10, default is 3 No
Number of backend ECS instances that can be added or deleted in batch 20 No
API access frequency limit for a single key 5,000 times/day Currently, an automatic process is not available. Contact customer manager for help.
Maximum number of certificates uploaded by a single user 100 Currently, an automatic process is not available. Contact customer manager for help.
Thank you! We've received your feedback.