Request Throttling

What Is Request Throttling?

Request throttling is a method used by Huawei Cloud to control the frequency of calling open APIs. A quota refers to the maximum number of calls made to a single API within a specified time window.

Request Throttling for Customer Operations Capability APIs

Traffic quota: 10/1(s); API request throttling dimensions: source IP address, API, and ParentUid, indicating that a single user or source IP address can send up to 10 requests to the API every second.

Scenario	Sub-Scenario	API	URL	Traffic Quota	Quota Dimension
Managing Products	Querying product information	Querying Cloud Service Types	GET /v2/products/service-types	10/1(s)	API request throttling dimensions: Source IP address, API, and ParentUid
		Querying Resource Types	GET /v2/products/resource-types	10/1(s)	API request throttling dimensions: Source IP address, API, and ParentUid
		Querying Resources by Cloud Service Type	GET /v2/products/service-resources	10/1(s)	API request throttling dimensions: Source IP address, API, and ParentUid
		Querying Usage Types	GET /v2/products/usage-types	10/1(s)	API request throttling dimensions: Source IP address, API, and ParentUid
		Querying Measurement Units	GET /v2/bases/measurements	10/1(s)	API request throttling dimensions: Source IP address, API, and ParentUid
		Querying the Measurement Unit Number System	GET /v2/bases/conversions	10/1(s)	API request throttling dimensions: Source IP address, API, and ParentUid
	Querying product price	Querying the Price of a Pay-per-Use Product	POST /v2/bills/ratings/on-demand-resources	10/1(s)	API request throttling dimensions: Source IP address, API, and ParentUid
		Querying the Price of a Yearly/Monthly Product	POST /v2/bills/ratings/period-resources/subscribe-rate	30/1(s)	API request throttling dimensions: Source IP address, API, and ParentUid
		Querying the Renewal Price of a Yearly/Monthly Resource	POST /v2/bills/ratings/period-resources/renew-rate	10/1(s)	API request throttling dimensions: Source IP address, API, and ParentUid
Managing Accounts	-	Querying the Account Balance	GET /v2/accounts/customer-accounts/balances	10/1(s)	API request throttling dimensions: Source IP address, API, and ParentUid
Managing Transactions	Managing coupons	Querying Coupons	GET /v2/accounts/partner-accounts/account-change-records	10/1(s)	API request throttling dimensions: Source IP address, API, and ParentUid
	Managing yearly/monthly orders	Querying Orders	GET /v2/orders/customer-orders	20/1(s)	API request throttling dimensions: Source IP address, API, and ParentUid
		Querying Order Details	GET /v2/orders/customer-orders/details/{order_id}	10/1(s)	API request throttling dimensions: Source IP address, API, and ParentUid
		Querying Available Discounts of an Order	GET /v2/orders/customer-orders/order-discounts	10/1(s)	API request throttling dimensions: Source IP address, API, and ParentUid
		Paying Yearly/Monthly Product Orders	POST /v3/orders/customer-orders/pay	10/1(s)	API request throttling dimensions: Source IP address, API, and ParentUid
		Canceling Orders in the Pending Payment Status	PUT /v2/orders/customer-orders/cancel	10/1(s)	API request throttling dimensions: Source IP address, API, and ParentUid
		Querying the Amount of Unsubscription Orders	GET /v2/orders/customer-orders/refund-orders	10/1(s)	API request throttling dimensions: Source IP address, API, and ParentUid
	Managing yearly/monthly resources	Querying Customer's Yearly/Monthly Resources	POST /v2/orders/suscriptions/resources/query	10/1(s)	API request throttling dimensions: Source IP address, API, and ParentUid
		Renewing subscription to yearly/monthly resources	POST /v2/orders/subscriptions/resources/renew	10/1(s)	API request throttling dimensions: Source IP address, API, and ParentUid
		Unsubscribing from yearly/monthly resources	POST /v2/orders/subscriptions/resources/unsubscribe	10/1(s)	API request throttling dimensions: Source IP address, API, and ParentUid
		Enabling Automatic Subscription Renewal for Yearly/Monthly Resources	POST /v2/orders/subscriptions/resources/autorenew/{resource_id}	10/1(s)	API request throttling dimensions: Source IP address, API, and ParentUid
		Disabling Automatic Subscription Renewal for Yearly/Monthly Resources	DELETE /v2/orders/subscriptions/resources/autorenew/{resource_id}	10/1(s)	API request throttling dimensions: Source IP address, API, and ParentUid
		Enabling/Canceling the Change from Yearly/Monthly to Pay-per-Use upon Expiration	POST /v2/orders/subscriptions/resources/to-on-demand	10/1(s)	API request throttling dimensions: Source IP address, API, and ParentUid
	Managing resource packages	Querying resource packages	POST /v3/payments/free-resources/query	10/1(s)	API request throttling dimensions: Source IP address, API, and ParentUid
		Querying the Resource Usage	POST /v2/payments/free-resources/usages/details/query	10/1(s)	API request throttling dimensions: Source IP address, API, and ParentUid
		Querying Resource Package Usage Details	GET /v2/bills/customer-bills/free-resources-usage-records	10/1(s)	API request throttling dimensions: Source IP address, API, and ParentUid
Managing Bills	Managing bills	Querying Summary Bills	GET /v2/bills/customer-bills/monthly-sum	25/1(s)	API request throttling dimensions: Source IP address, API, and ParentUid
		Viewing Resource Usage Details	POST /v2/bills/customer-bills/res-records/query	30/1(s)	API request throttling dimensions: Source IP address, API, and ParentUid
		Viewing Resource Expenditures	GET /v2/bills/customer-bills/res-fee-records	30/1(s)	API request throttling dimensions: Source IP address, API, and ParentUid
Management Costs	Management costs	Querying Cost Data	POST /v4/costs/cost-analysed-bills/query	10/1(s)	API request throttling dimensions: Source IP address, API, and ParentUid
Managing an Enterprise	Managing enterprise projects	Enabling the Enterprise Project Management	POST /v2/enterprises/enterprise-projects/authority	10/1(s)	API request throttling dimensions: Source IP address, API, and ParentUid
Managing Invoices	Managing invoices	Querying the Invoice List	GET /v1.0/{domain_id}/payments/intl-invoices	10/1(s)	API request throttling dimensions: Source IP address, API, and ParentUid

Troubleshooting for Request Throttling Failure

The following is an example of error returned by an API:

{"status_code":429,"request_id":"7e6c1***********c610","error_code":"APIGW.0308","error_message":"The throttling threshold has been reached: policy user over ratelimit,limit:10,time:1 second","encoded_authorization_message":""}

Troubleshooting

Huawei Cloud provides default traffic quotas for customer operations capability APIs. Users can increase the quota based on their service requirements. Users can monitor status code 429 and construct a retry mechanism. The retry mechanism should follow an exponential backoff plan to reduce the number of requests if necessary. The user can also establish some randomness in the backoff timesheets to avoid severe herd mentality.

Adjusting Quotas

If the traffic quota cannot meet your service requirements and concurrency scenarios, submit a Huawei Cloud service ticket with the service scenario description attached. After receiving the service ticket, the Huawei Cloud after-sales service team will adjust the quota based on your requirements.

Parent topic: API Invoking Methods

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