Build a Config Registry

Singleton pattern

Challenge 2 of Create & Share ObjectsBeginner~55 minFree

Build the one shared configuration registry that every real app relies on. You will implement the Singleton pattern by hand with a classmethod accessor, give it read and write access, add safe lookups, then generalize the whole idea into a reusable decorator you apply to a second class. This is the exact machinery behind global config, connection pools, and loggers.

5 steps

1. 1One Shared Instance
2. 2Shared Read and Write
3. 3Safe Lookups
4. 4A Reusable Singleton Decorator
5. 5Applying It to a Logger