service singleton mode

[wu-clan]

Let's take a look at some of these great ideas.

[nipeone]

In fact, the CRUD layer is the singleton pattern, I suggest that the Service layer and the CRUD adopt the same structure, so that the overall structure is clearer

[wu-clan]

PR now available for viewing: #270

[nipeone]

why delete the pr?it can not make the proj more complex,otherwises, it's more clearer

[wu-clan]

Clearer, I agree, but more complex and probably unacceptable for pure python people.

Maybe a simple singleton pattern would suffice instead of ABC, but ABC feels good to me.

[wu-clan]

I reopened the PR and modified the structure.

[wu-clan]

Also to add, it seems to me that the CRUD method in the service cannot be generalized.

[wu-clan]

about celery, it is highly recommended to use folders to store multiple task files.

Hi, @nipeone

Since I'm not an expert in celery, it's a bit difficult for me in some of the design aspects.

[wu-clan]

Check this out, too. #237