Limits#
All accounts, by default, have a preconfigured set of thresholds (or limits) to manage capacity and prevent abuse of the system. The system recognizes two kinds of limits: rate limits and absolute limits. Rate limits are thresholds that are reset after a certain amount of time passes. Absolute limits are fixed.
Rate limits#
The following table specifies the default rate limits for all Rackspace Cloud Databases API operations:
API Operation |
API Action |
Rate Limit |
|---|---|---|
List Versions |
GET / |
100/minute |
List Version Details |
GET /{version} |
100/minute |
Create Database Instance |
POST /instances |
20/minute |
List All Database Instances |
GET /instances |
100/minute |
List Database Instance Status and Details |
GET /instances/{instanceId} |
100/minute |
Delete Database Instance |
DELETE /instances/{instanceId} |
20/minute |
Enable Root User |
POST /instances/{instanceId}/root |
20/minute |
List Root-Enabled Status |
GET /instances/{instanceId}/root |
100/minute |
Restart Instance |
POST /instances/{instanceId}/action |
5/minute |
Resize the Instance |
POST /instances/{instanceId}/action |
5/minute |
Resize the Instance Volume |
POST /instances/{instanceId}/action |
5/minute |
Create Database |
POST /instances/{instanceId}/databases |
20/minute |
List Databases for an Instance |
GET /instances/{instanceId}/databases |
100/minute |
Delete Database |
DELETE /instances/{instanceId}/databases/{databaseName} |
20/minute |
Create User |
POST /instances/{instanceId}/users |
50/minute |
List Users in Database Instance |
GET /instances/{instanceId}/users |
100/minute |
Change User Password |
PUT /instances/{instanceId}/users |
50/minute |
Modify User Attributes |
PUT /instances/{instance_Id}/users/{userid} |
50/minute |
List User |
GET /instances/{instanceId}/users/{name} |
100/minute |
Delete User |
DELETE /instances/{instanceId}/users/{name} |
50/minute |
List User Access |
GET /instances/{instanceId}/users/{name}/databases |
100/minute |
Grant User Access |
PUT /instances/{instanceId}/users/{name}/databases |
50/minute |
Revoke User Access |
DELETE /instances/{instanceId}/users/{name}/databases/{databaseName} |
50/minute |
List Flavors |
GET /flavors |
100/minute |
List Flavors by ID |
GET /flavors/{flavorId} |
100/minute |
Create Backup |
POST /backups |
100/minute |
List Backups |
GET /backups |
100/minute |
List Backup by ID |
GET /backups/{backupId} |
100/minute |
Delete Backup |
DELETE /backups/{backupId} |
20/minute |
List Backups for Instance |
GET /instances/{instanceId}/backups |
100/minute |
Restore Backup (same as create instance) |
POST /instances |
20/minute |
If you exceed the thresholds established for your account, a 413 (rate Control)
HTTP response will be returned with a Retry-After header to notify the
client when it can attempt to try again.
Absolute limits#
Refer to the following table for the absolute limits that are set.
Name |
Description |
Limit |
|---|---|---|
Instances |
Maximum number of instances allowed for your account |
25 |
Volume Size |
Maximum volume size per instance in gigabytes (GB) for your account |
1024 |