Design patterns are common approaches to solving similar problems. The 1995 book Design Patterns, by the so-called Gang of Four (GoF), describes 23 patterns. Pluralsight’s design patterns library includes 32 different patterns, including most of the original GoF patterns. Some design patterns tend to cause more problems than they solve, and are thus commonly referred to as antipatterns.

Alphabetical List of Design Patterns (! indicates some that are often considered antipatterns):

  • Abstract Factory
  • Adapter
  • Aggregate
  • Bridge
  • Builder
  • Chain of Responsibility
  • Command
  • Composite
  • Decorator
  • Entity
  • Event Aggregator
  • Facade
  • Factory Method
  • Flyweight
  • Interpreter
  • Iterator
  • Lazy Load
  • Mediator
  • Memento
  • Model-View-Controller (MVC)
  • Model-View-Presenter (MVP)
  • Model-View-ViewModel (MVVM)
  • Null Object
  • Observer
  • Prototype
  • Proxy
  • Repository (and CachedRepository)
  • Rules Engine
  • Singleton (!)
  • Service Locator (!)
  • Specification
  • State
  • Strategy
  • Template Method
  • Unit of Work
  • Value Object
  • Visitor
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