Design Patterns

Design patterns are solutions to the problems which we face in IT world. Based on my experience I classify these into 2 major categories:

Architectural Design Patterns

Service Oriented Architecture

MVP - Model View Presenter

MVC - Model View Controller

MVVM - Model View View-Model

Publish/Subscribe Design Pattern

Generic Service Design Pattern

Implementation/Development Level Design Patterns

You might have read Gang-Of-4 design patterns and may be other design patterns. In this article, I am going simplify all design patterns that I have come across in my experience.

Remember, any design patter will involve the following:

Class
Interface
Structs/Enums
Abstract Classes

And all other sub-pieces which comes with in above items.

So, why do we have design patterns?
Answer is, to avoid the repeating problems in any software application and leads to easy maintenance.