Simple Application Server limits the queries per second (QPS) of an API operation for a single user or all users. If the number of requests that you initiate to call an API operation reaches the specified upper limit, throttling is triggered, and your business may be interrupted. This topic describes the QPS limits on Simple Application Server API operations.
Terms
Term | Description |
QPS limit for a single user | QPS limit for a single 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 QPS limit for a single user for the CreateInstances API operation is 10 calls per minute. 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 10 calls to the API operation per minute. If the upper limit is exceeded, throttling is triggered. |
QPS limit for all users | QPS limit 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 QPS limit for all users for the CreateInstances API operation is 500 calls per second. 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 API operation per second. If the upper limit is exceeded, throttling is triggered. |
Instances
API operation | QPS limit for a single user (calls/minute) | QPS limit for all users (calls/second) |
10 | 500 | |
10 | 500 | |
10 | 500 | |
10 | 500 | |
10 | 500 | |
10 | 500 | |
10 | 500 | |
10 | 500 | |
10 | 500 | |
10 | 500 | |
10 | 500 |
Firewalls
API operation | QPS limit for a single user (calls/minute) | QPS limit for all users (calls/second) |
10 | 500 | |
10 | 500 | |
10 | 500 |
Snapshots
API operation | QPS limit for a single user (calls/minute) | QPS limit for all users (calls/second) |
10 | 500 | |
10 | 500 | |
10 | 500 |
Disks
API operation | QPS limit for a single user (calls/minute) | QPS limit for all users (calls/second) |
10 | 500 | |
10 | 500 |
Custom images
API operation | QPS limit for a single user (calls/minute) | QPS limit for all users (calls/second) |
10 | 500 | |
10 | 500 | |
10 | 500 |
Other resources
API operation | QPS limit for a single user (calls/minute) | QPS limit for all users (calls/second) |
10 | 500 | |
10 | 500 | |
10 | 500 |