You can set topic traffic throttling rules to prevent the excessive traffic of one topic from affecting other topics.
Setting topic traffic throttling rules are only available to broker on versions 1.1.1, 2.4.1, and 2.8.1.
2. Select Instance List on the left sidebar and click the ID/Name of your instance to enter the instance details page.
3. On the instance details page, select Topic Management.
4. Click More > Traffic Throttling in the Operation column to set the traffic throttling threshold.
Maximum Topic Production Traffic: This value excludes replica traffic and ranges from 1 MB/s to the maximum bandwidth purchased for the instance / number of replicas of the topic.
Maximum Topic Consumption Traffic: This value ranges from 1 MB/s to the maximum bandwidth purchased for the instance.
The underlying layer throttles the traffic for brokers, and the actual traffic throttling value (equal to an integer multiple of the number of brokers) may be slightly different from the set value.