Each trigger instance fires before the previous workflow instance finishes running.Īlthough the default number of trigger instances that can concurrently run is unlimited, you can limit this number by turning on the trigger's concurrency setting, and if necessary, select a limit other than the default value.Ī Consumption workflow has a default limit for the number of actions that can run over a 5-minute rolling interval. Limit the number of workflow instances that can run at the same time.īy default, if your workflow's trigger condition is met more than once at the same time, then multiple instances of that trigger fire and run concurrently or in parallel. To handle throttling at this level, you have the following options: Under Chart Title, from the Metric list, select Http 4xx. For more information, see View metrics for workflow health and performance in Azure Logic Apps. The chart now shows throttled events for both actions and triggers in your logic app workflow. In the second metric bar, from the Metric list, select Trigger Throttled Events. In the first metric bar, from the Metric list, select Action Throttled Events. Under Chart Title, select Add metric, which adds another metric bar to the chart. On the logic app resource menu, under Monitoring, select Metrics. In the Azure portal, open your logic app resource. To find throttling events at this level, follow these steps: If your logic app resource exceeds these limits, your logic app resource gets throttled, not just a specific workflow instance or run. The following sections describe the common levels at which your workflow might experience throttling:Īzure Logic Apps has its own throughput limits. Throttling can create problems such as delayed data processing, reduced performance speed, and errors such as exceeding the specified retry policy.įor example, the following SQL Server action in a Consumption workflow shows a 429 error, which reports a throttling problem: If your logic app workflow experiences throttling, which happens when the number of requests exceed the rate at which the destination can handle over a specific amount of time, you get the "HTTP 429 Too many requests" error. Applies to: Azure Logic Apps (Consumption + Standard)
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