Provide the C4 model: The component diagram

[peter279k]

As title, I tried to analyze this project and illustrate the c4 model about component diagram.

Please help me to check whether these component diagrams are correct.

Once they're confirmed, I think it's great to add them in the README.md.

There'are as follows:

The Product component diagram is as follows:

The Cart component diagram is as follows:

The Payment component diagram is as follows:

The Order component diagram is as follows:

[peter279k]

@BaseMax, please suggest some recommendations at your available time. Thanks!