Where is technical document

[tuantmtb]

I'm very excited about superset project. I want to contribute new features. I have a some question:
Where is technical document?
How can I understand overview architecture of superset?
Thank you very much !

[xrmx]

I don't think there's such a document, what are you interested in?

[tuantmtb]

I'd like to understand flow of process and architecture, component layers.
How to integrate database and notify when metric abnormal.

[xiaohanyu]

This is the official documentation: https://superset.incubator.apache.org/

This is an example PR about how to add a new visualization type: #3013

[CrystalSun1992]

@xiaohanyu it does not work on version 0.24.0