AWS Documentation » Amazon Comprehend » Developer Guide » Comprehend » Comprehend Custom » Custom Classification » Real-time Analysis with Custom Classification » Autoscaling with Endpoints » Scheduled Scaling

Scheduled Scaling

Setting up scheduled scaling so that the endpoint capacity is adjusted on a given schedule to accommodate heavier or lighter usage of the endpoint. For additional information on scheduled scaling, see Scheduled Scaling for Application Auto Scaling.

Note

All of the following examples are formatted for Unix, Linux, and macOS. For Windows, replace the backslash (\) Unix continuation character at the end of each line with a caret (^).

To set up scheduled scaling

1. RegisterScalableTarget: Register Amazon Comprehend as a scalable target for AWS Auto Scaling.

   aws application-autoscaling register-scalable-target \
       --service-namespace comprehend \
       --region region \
       --resource-id endpoint ARN \
       --scalable-dimension comprehend:document-classifier-endpoint:DesiredInferenceUnits \
       --min-capacity 1 \
       --max-capacity 3  

2. PutScheduledAction: A scheduled action controls the min and max provisioned capacity within which the provisioned capacity can be scaled at a specific schedule. In this case, we put a scheduled action to change the min and max capacity every day at 12:00 UTC to a min of 2 and a max of 5. For more information on chronological expressions and scheduled scaling, see Schedule Expressions.

   aws application-autoscaling put-scheduled-action \
       --service-namespace comprehend \
       --region region \
       --scheduled-action-name TestScheduledAction \
       --resource-id endpoint ARN \
       --scalable-dimension comprehend:document-classifier-endpoint:DesiredInferenceUnits \
       --schedule "cron(0 12 * * ? *)" \
       --scalable-target-action MinCapacity=2,MaxCapacity=5  

To remove an autoscaling scheduled action

1. DeleteScheduledAction: Deleting the scheduled action.

   aws application-autoscaling delete-scheduled-action \
       --service-namespace comprehend \
       --region region \
       --scheduled-action-name RemoveScheduledAction \
       --resource-id endpoint ARN \
       --scalable-dimension comprehend:document-classifier-endpoint:DesiredInferenceUnits  

2. DeregisterScalableTarget: Deregistering the scalable target so that autoscaling no longer applies to it.

   aws application-autoscaling deregister-scalable-target \
       --service-namespace comprehend \
       --region region \
       --resource-id endpoint ARN \
       --scalable-dimension comprehend:document-classifier-endpoint:DesiredInferenceUnits