Mediator Design Pattern Explained with a Real-Time Example on Facebook

In this tutorial, we delve into the Mediator Design Pattern through a real-time example inspired by Facebook. The Mediator pattern promotes loose coupling by centralizing complex communication between objects.

Imagine a scenario where users interact on Facebook. Each user can send messages, react to posts, and comment on content. The Mediator pattern would serve as the central entity managing these interactions.

**Description:**
We explore how the Mediator pattern orchestrates interactions on Facebook. Users, posts, comments, and reactions all communicate through the Mediator, reducing direct dependencies and simplifying the system's design.

**Key Points:**
- Introduction to the Mediator Design Pattern
- Real-time example inspired by Facebook
- Managing complex interactions between users, posts, comments, and reactions
- Benefits of loose coupling and centralized communication
- Improving scalability and maintainability in social networking systems

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Mediator Design Pattern Explained with a Real-Time Example on Facebook

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[abhrajyotikirtania]

How this differ with respect to observer? Is this in case of observer the subject is the only guy who produce information which should be broadcasted to all the observer/subscriber? In the case of Mediator any of the observer(i.e subscriber) can share the resource to the subject/mediator and the subject would in turn broadcast to all the observer. Please correct me if i am wrong.