Help Center/ TaurusDB/ User Guide/ Serverless Instances/ Changing the Compute Range of a Serverless Instance

Updated on 2025-08-25 GMT+08:00

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Changing the Compute Range of a Serverless Instance

After buying a serverless instance, you can change its compute range. When certain trigger conditions are met, instance compute is automatically changed.

Trigger Conditions for Compute Changes

Cloud Eye monitors the CPU usage and memory usage of serverless instances. If any condition listed in Table 1 is met, a compute change will be triggered.

**Table 1** Trigger conditions for compute changes
Change Type	Trigger Condition
Compute scale-up	If any of the following conditions is met, a compute scale-up is automatically triggered: The CPU usage is greater than 80% for 4 seconds and it has been at least 1 second since the last scale-up. The memory usage is greater than 80% for 4 seconds and it has been at least 1 second since the last scale-up. The CPU usage is greater than 60% for 20 seconds and it has been at least 10 seconds since the last scale-up.
Compute scale-down	The CPU usage is less than 30% for 10 seconds, it has been at least 20 seconds since the last scale-down, and the memory usage is 80% or less.

Constraints

As data grows, there may be some cache or memory fragments that cannot be released, leading to high memory usage. If you want to reduce compute to the minimum, you can reboot the instance.
If resources are insufficient when you change the compute change, nodes with the desired specifications will be created on a physical machine that has enough resources. If resources on the primary node are insufficient, a primary/standby failover will be performed.

Changing the Compute Range

Log in to the management console.
Click in the upper left corner and select a region and project.
Click in the upper left corner of the page and choose Databases > TaurusDB.
On the Instances page, click the instance name to go to the Basic Information page.
In the Serverless Information area, click Change under Compute Range.

Figure 1 Changing serverless information
In the displayed dialog box, set Min. Compute and Max. Compute, and click OK.

Figure 2 Changing the compute range
Check the new compute range in the Serverless Information area.