On this page

Show all

Help Center/ IoT Device Access/ User Guide/ Rules/ Data Forwarding Flow Control Policies

Data Forwarding Flow Control Policies

Updated on 2024-11-06 GMT+08:00

View PDF

Overview

You can create flow control policies in different dimensions on IoTDA based on your service scenarios and performance of the forwarding target (such as a third-party application server) to control data forwarding flows.

Dimensions of Flow Control Policies

**Table 1** Types of flow control policies
Policy Type	Description
By instance	The policy applies to all data forwarding flows on the instance. Data that exceeds the threshold will be discarded.
By forwarding target	The policy applies to all data forwarding flows of the forwarding target you specify.
By forwarding rule	The policy applies to all data forwarding flows of the forwarding rule you specify. Data that exceeds the threshold will be discarded.
By forwarding action	The policy applies to all data forwarding flows of the forwarding action you specify.

NOTICE:

After a flow control policy is created, the policy type cannot be modified.
Data that exceeds the threshold set in instance- and rule-level flow control policies will be discarded. Use flow control policies carefully.
If you create different types of flow control policies, the policy with the threshold reached first takes effect. For example, if the threshold in the flow control policy for forwarding rule A is 50 TPS, the threshold in the policy for action B of forwarding rule A is 100 TPS, and the actual data flow of forwarding rule A is 80 TPS, the flow control policy for forwarding rule A is triggered.

Constraints

You can create up to four flow control policies for an IoTDA instance.

Procedure

Access the IoTDA service page and click Access Console. Click the target instance card.
In the navigation pane, choose Rules > Data Forwarding, and click Configure Policy. The Flow Control Policies page is displayed.

Figure 1 Data forwarding - Policy configuration

In the displayed dialog box, configure parameters and click OK.

Figure 2 Data forwarding - Creating a flow control policy
Click to enlarge

**Table 2** Parameters
Parameter	Description
Policy Name	The value can contain 4 to 256 characters. Only letters, digits, and special characters (_?'#().,&%@!-) are allowed.
Description	Description of the policy. The value can contain 4 to 256 characters. Only letters, digits, and special characters (_?'#().,&%@!-) are allowed.
Threshold	The value ranges from 1 to 1000.
Policy Type	The options include By instance, By target, By rule, and By action.
Forwarding Target	Forwarding targets supported by the current instance. This parameter is available only when Policy Type is set to By target.
Bound Rule	Data forwarding rules on IoTDA. This parameter is available only when Policy Type is set to By rule.
Bound Action	Data forwarding actions on IoTDA. This parameter is available only when Policy Type is set to By action.

Parent topic: Rules

Previous topic: Data Forwarding Stack Policies

Next topic: Abnormal Data Target

Feedback

Was this page helpful?

Helpful Not helpful

Provide feedback

Thank you very much for your feedback. We will continue working to improve the documentation.See the reply and handling status in My Cloud VOC.

The system is busy. Please try again later.

Which of the following issues have you encountered?

Content is inconsistent with the product UI

Unclear descriptions

Lack of examples or code

Incorrect steps

Can't find what I need

Lack of best practices

Feedback (optional)

0/500

Select at least one type of issue, and enter your comments or suggestions.

Enter a maximum of 500 characters.

Submit Cancel

For any further questions, feel free to contact us through the chatbot.

Chatbot