Hi

Thanks for your comment

Singletons are another smell:

https://blog.devgenius.io/code-smell-32-singletons-d6d7b0a9f251

and also Caches:

https://blog.devgenius.io/code-smell-49-caches-d2e64373b838

So, IMHO. You have 3 code smells mixed togheter. That is the problem root.

3 cases , 3 smells :)