Hey community!
After introducing event callbacks in the latest version of Flash I am pleased to release the same for native Dash with the dash-even-callback plugin. Use this blog post 🚀 Flash 1.2.0 - streaming UI updates via Server Sent Events to checkout examples and details on how to implement and use dash_event_callback.
That said - it doesn’t support endless streams, has an overall 60s timeout - thats because Flask as WSGI server blocks a whole worker (e.g. deployed with gunicorn) for each request. So if your deployed container has 6 workers a single with 6 tabs opened could block the whole instance. But within the duration of normal callback you have no drawbacks using event_callback and benefit from streaming props as they become ready!
Looking forward to your feedback!