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Volcano Engine Function as a Service

Trigger management

Creating Timer triggers

Timer triggers are used to periodically trigger function logic. This topic describes how to create Timer triggers.

Prerequisites

The function must have completed at least one full release. For details, see Releasing functions.

Limit

You can create up to 20 triggers for each function.

Procedure

In the top navigation bar, select the target region.

In the function list, find the function for which you want to create a trigger and click its name.

On the function details page, click Create trigger on the Trigger tab.

In the Create trigger panel, specify the parameters as required.

Parameter	Description
Trigger type	Select Scheduled trigger.
Trigger name	Specify a custom name for the trigger. Trigger names cannot be repeated under the same function. The trigger name cannot be modified after being created.
Push time	You can specify the time by using one of the following methods. After configuration, click Trigger time preview to view the trigger time points. Specified time: Specify the Recurrence cycle and Trigger time parameters. Cron expression: Set the time by using a Crontab expression. A Crontab expression consists of five parts: minute, hour, day of the month, month, and day of the week. The details are as follows: Minute: The value range is 0 to 59. If the value is , it indicates that any value can be matched. Hour: The value range is 0 to 23. If the value is , it indicates that any value can be matched. Day of the month: The value range is 1 to 31. If the value is , it indicates that any value can be matched. Month: The value range is 1 to 12. If the value is , it indicates that any value can be matched. Day of the week: The value range is 0 to 7. When the value is 0 or 7, it indicates Sunday. When the value is , it indicates that any value can be matched. For example, 0 12 * * indicates that the function is triggered at 12:00 noon every day.
Activate now	Whether to enable the Trigger while creating it.
Request concurrency	Specify whether to enable request concurrency for the trigger: Enable: If the trigger has not completed a request and the time for processing the next request arrives, it will directly process the next request in concurrency. Disable: If the trigger has not completed a request and the time for processing the next request arrives, it will skip the next request.
Trigger message	Enter the message for triggering the function execution. This parameter can be left empty.
Description	Enter the description of the trigger. This parameter can be left empty.

Click Confirm to create the Timer trigger.

What to do next

For the method of modifying the configurations of the Timer trigger, see Managing triggers.

For the method of monitoring the running status of the function, see Monitoring and logging.

Last updated: 2026.08.19 14:06:06