CloudSSO limits the queries per second (QPS) of an API operation for a single user and all users. If the number of calls to an API operation per second exceeds a specific QPS limit, throttling is triggered. Throttling may interrupt your services. Therefore, make API calls at a proper frequency. This topic describes the QPS limits on an API operation of CloudSSO.

Terms

Term Description
Maximum QPS per user Maximum QPS per user refers to the total number of calls that a single Alibaba Cloud account, and the RAM users and RAM roles within the Alibaba Cloud account can make to an API operation per second.

For example, the maximum QPS per user for the CreateFolder operation is 20. This indicates that a single Alibaba Cloud account, and the RAM users and RAM roles within the Alibaba Cloud account can make a total number of 20 calls to the CreateFolder operation per second. If the upper limit is exceeded, throttling is triggered.

Maximum QPS for all users Maximum QPS for all users refers to the total number of calls that all Alibaba Cloud accounts, and all RAM users and RAM roles within the Alibaba Cloud accounts can make to an API operation per second.

For example, the maximum QPS for all users for the CreateFolder operation is 500. This indicates that all Alibaba Cloud accounts, and all RAM users and RAM roles within the Alibaba Cloud accounts can make a total number of 500 calls to the CreateFolder operation per second. If the upper limit is exceeded, throttling is triggered.

QPS limits on CloudSSO API operations

You can call the operations that are not listed in the following table up to 100 times per second per user. The operations are globally limited to 100 times per second across all users.

Operation Maximum QPS per user Maximum QPS for all users
ProvisionAccessConfiguration 20 100
DeprovisionAccessConfiguration 20 100
ListAccessConfigurationProvisionings 20 100
CreateAccessAssignment 20 100
ListAccessAssignments 20 100
DeleteAccessAssignment 20 100
ListTasks 20 100
GetTask 20 100