@Marvin Any sensor-like feature?

It seems like there's been interest in a sensor-like feature in Prefect, similar to Airflow's sensor tasks. This feature would allow for the polling of conditions and initiating processes when certain conditions are met, such as: - Starting a process every time a file appears in an S3 bucket. - Initiating a task when a specific artifact is created by another task. - Kicking off a process when an external system becomes unavailable. Currently, Prefect does not have a built-in sensor feature directly analogous to Airflow's sensors, but there has been discussion and interest in implementing such an idiom. You can check out the GitHub discussions and issues for more details on community proposals and ideas here: Document Sensor-like task idiom and Sensor Functionality. In the meantime, users often implement custom sensor-like behavior by creating tasks that poll for conditions and then trigger flows or actions based on the results. This isn't ideal for everyone, but it does offer flexibility until Prefect possibly integrates more direct support for such features.

@Marvin the analog for prefect is events, show the e-commerce example

I couldn't locate the exact e-commerce example you mentioned in the current documentation. However, it seems that Prefect's ControlFlow introduces the concept of events that can be quite powerful for building dynamic workflows. If you're interested in exploring event-driven or event-managed workflows further, you might want to check out the documentation on event handling in ControlFlow, starting here: ControlFlow patterns for streaming. If you're aiming to create an event-driven workflow similar to what might be found in e-commerce scenarios, utilizing handlers and events would be key. Handlers can help process events asynchronously and manage actions like logging, updating UI elements, or responding to customer actions. Sadly, I couldn't find the humorous robot's shopping cart by the name of "e-commerce example" in the documentation, but with a bit of creativity, you can assemble your own template!