Building support for decoupling Dash from Flask and supporting Quart / FastAPI servers#3430
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BSd3v wants to merge 122 commits intoplotly:devfrom
Open
Building support for decoupling Dash from Flask and supporting Quart / FastAPI servers#3430BSd3v wants to merge 122 commits intoplotly:devfrom
BSd3v wants to merge 122 commits intoplotly:devfrom
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gvwilson
added
feature
work to modularize the dash eco-system and decouple from Flask
∙ - added types to BaseFactory to remove linting errors on create app in Flask and Quart Factory
… `request` context
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Just came here to comment that this is very exciting :) |
LiamConnors
reviewed
Feb 6, 2026
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+249
| :param backend: The backend to use for the Dash app. Can be a string | ||
| (name of the backend) or a backend class. Default is None, which | ||
| selects the Flask backend. Currently, "flask", "fastapi", and "quart" backends |
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Does the server param docstring above need an update too?
Question - For the difference between the too - is it you'd use server if you want Dash to use an existing instance of the server? vs backend if you want Dash to create the instance?
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Yes, I believe so.
You should be able to pass a preconfigured server of any of the supported types.
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@BSd3v This is looking good, I have made some significant changes to the fastapi implementation. The config is now transfered via environment variable and I merged all the middlewares into one. Could you review those changes, then we can merge and release a rc version 🚀 |
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This is an open PR draft, to contribute please target my forked branch.
The goal of this PR is to modularize the Dash setup to be independent of Flask (will fallback to Flask) and allow devs to configure their own backend.
fixes #1571