How to correctly describe the architecture of the project?

Question

Software design

Good day, it was
necessary to describe the architecture of the project, the main nodes (modules), what interacts with what (data flows) used by the DBMS. I haven’t done anything like this before and I can’t understand by what principle it would be more correct to describe ..
Can you push in the right direction? Preferably some example
From used: python + django, golang, angular, postgresql, redis and some more

Answer 1

Here are a couple of examples from the ASOIU design course https://yadi.sk/i/KTRP6OeI38NmZZ
google ASOIU DESIGN - I don’t remember what the notations are called .... IDEF0 and others
google it - "Class Diagram, Deployment Diagram
for diagramming I used enterprise architect
or draw.io
styles are different.

Answer 2

Based on common sense.
There's nothing particularly magical about it.
PS:
There are special tools, there are special languages ​​for describing projects - but this is already for serious tasks.
I doubt that a serious task suddenly found itself on the shoulders of a person who does not know how to approach it.

Answer 3

You need to gain experience by working in a team with people who have it. And then do it.
This is the most accurate answer to your question in its current form.
If you have specific questions - ask, we will answer.