Build a Notification Dispatcher

Factory pattern

Challenge 1 of Create & Share ObjectsBeginner~55 minFree

Callers should say send this on email and never touch a class name. The Factory pattern puts that decision in one place. Build concrete notifiers, a simple factory function, a registry-driven factory you can extend without editing, then a service that dispatches and fans messages out across many channels at once.

5 steps

1. 1Concrete Notifiers
2. 2The Factory Function
3. 3A Registry-Based Factory
4. 4The Notification Service
5. 5Broadcast Fan-Out