Thank you @Retired_mod .  Yes,custom polling mechanism is one option. Question for you, it means there is no way to override polling frequency of DAB API calls. 

Behind the scenes,DAB calls below APIs :

GET /api/2.0/preview/scim/v2/Me 
GET /api/2.0/workspace/get-status?path=/Workspace/datapipeline/deployments/bundles/prod/data-pipeline/state/terraform.tfstate 
GET /api/2.0/workspace/export?direct_download=true&path=/Workspace/datapipeline/deployments/bundles/prod/data-pipeline/state/terraform.tfstate
POST /api/2.1/jobs/run-now 
GET /api/2.1/jobs/runs/get?run_id=410841*******
GET /api/2.1/jobs/runs/get-output?run_id=410841******