Is there a way to dynamically change the properties of the flow executor? I have a specific situation where I run say 30 tasks in parallel (using mapping) to retrieve data, but the data provider can reply that the API is overused in which case I need to reduce the amount of workers in the dask executor to 1, otherwise the provider will ban the IP. I could handle that somehow internally to the download task with threading.Lock, but I guess that would only work for the threading local dask executor. Can it be handled at the prefect flow or task level?

Hi @Aurélien Vallée! Task concurrency limiting is the best way to do this: https://docs.prefect.io/orchestration/concepts/task-concurrency-limiting.html . Just set the limit below the API usage limit

nice, but it's prefect cloud only, and it's not dynamic from my understanding?

Yes unfortunately this is only for Prefect cloud. I think your thought is right that there is not a good way to achieve this dynamic adjustment, especially with a parallel executor.