Airflow control the parallelism and concurrency (draw)
  
Airflow configuration to allow for a larger scheduling capacity and frequency:
DAGs have configurations that improve efficiency:
- max_active_tasks: Overrides max_active_tasks_per_dag.
- max_active_runs: Overrides max_active_runs_per_dag.
Operators or tasks also have configurations that improves efficiency and scheduling priority:
- max_active_tis_per_dag: This parameter controls the number of concurrent running task instances across- dag_runsper task.
- pool: See Pools.
- priority_weight: See Priority Weights.
- queue: See Queues for CeleryExecutor deployments only.