I really love actor-based/ event-driven programming in general. Most people might only use high-level layers from Ray like Dask or Modin, I have made several ETL projects with Ray Core, really a good platform to handle the life cycle of tasks but performance was not that good.
An actor takes around 60-100MB of RAM... with such memory amount, I would rather call it a worker lol. Anyway really looking forward to seeing people do cool things with it