During a interview, I remember we talking about MVC models and how the change in the Model would change overall model. I was asked then what was this pattern. And I was like (forgot face ???) instead of saying Strategy Pattern.

    Thanks for Christopher Okhravi, nowadays 12 of them are straight on youtube videos[2] from the book [1].

  Strategy Pattern

         Using composition over inheritance

  Observer Pattern

         Poll vs Push archtecture. Keep on asking for changes

   Decorator Pattern – adding behavior dynamically to an object

   Factory Pattern – creation of objects

   Abstract Factory – build objects without specify the concrete object

  Singleton – restricts to one unique object the creation

  Command Pattern – encapsultes request as object, and have a queue of command

   Composite Pattern – combine requests for example commands.

[1] Head First Design Patterns

[2] https://www.youtube.com/watch?v=_BpmfnqjgzQ&list=PLrhzvIcii6GNjpARdnO4ueTUAVR9eMBpc&index=2