I am building a MERN stack application where I want to set a freemium based model for users containing 3 tiers, namely - bronze(free), silver(cost x), gold(cost y). The users are supposed to be charged monthly.
How do I set the MongoDB schema for the same?
PS: I can easily set a very basic key-value pair but I just want to get opinions if there is a standardized method to do it that can be flexible if I decide to change cost of silver and gold tiers.