Observer Design Pattern Applied on Real Life Store Use Case

Abstract

The paper explores the Observer Design Pattern in the context of a software system. It discusses the significance of design patterns in software engineering, particularly for object-oriented design, emphasizing their role in creating flexible, elegant, and reusable systems. The Observer pattern is specifically examined for its effectiveness in distributed event handling systems, highlighting its utility in decoupling components and facilitating communication between objects. A real-life scenario involving a customer and a store is used to illustrate the application of this pattern, showcasing how it optimizes customer experience and resource management in a retail context. The document also delves into technical aspects like .NET framework, UML basics, and provides C# code examples to demonstrate the practical implementation of the Observer pattern in a software ordering system.