Observer Pattern Table of Contents - When to Use - When NOT to Use - Instructions - Details - Source With the observer pattern , we can subscribe certain objects, the observers , to another object, called the observable . Whenever an event occurs, the observable notifies all its observers! When to Use - Use this when you need to notify multiple parts of an application about state changes or events - This is helpful for implementing event-driven, asynchronous communication between components When NOT to Use - When the subscriber count is very high and notification performance becomes critical…