Introducing IModelCacheKeyFactory to a C# REST API project

Hi ,

I have a C# REST API project that I am trying to introduce IModelCacheKeyFactory.

The reason I want this introduced is so I can cover a requirement where I can change multiple models dynamically that has the same table structure.
Similarly to this: https://yanxiaodi.medium.com/mapping-the-model-to-multiple-tables-with-entityframework-core-b46bdeed8661

Problem:
Database has multiple tables that keep getting regenerated every date in the format of :
AA_CITY
AB_CITY
AC_CITY

All tables have the exact same table structure.

I want to be able to pass "AA" for example in a GET REST method and the REST to be reading the correct table.

PS. If someone has an alternative suggestion of a dynamic method/procedure that returns what I am trying to establish (without affecting performance) , I would love to hear it as I want to cover future scenarios where other tables come into the picture that again have the same table structure but have a different name like for example

AA_CITY
AB_CITY (Same structure as AA_CITY)
AC_CITY (Same structure as AA_CITY)

AA_ADDRESS
AB_ADDRESS (Same structure as AA_ADDRESS)
AC_ADDRESS (Same structure as AA_ADDRESS)

P.S I do not wish to pass sql injections for this, I want this in a proper REST API structure

Thanks