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Abstract FactoryAdapterBridgeBuilderChain of ResponsibilityCommandCompositeDecoratorFacadeFactory MethodFlyweightInterpreterIteratorMediatorMementoObserverPrototypeProxySingletonStateStrategyTemplate MethodVisitor

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Analysis

Pattern comparison

Reviewing 3 patterns.

Criteria
creationalAbstract FactoryView pattern
structuralBridgeView pattern
structuralFacadeView pattern
Basics
Categorycreationalstructuralstructural
SummaryProvide an interface for creating families of related objects without specifying their concrete classes.Separate an abstraction from its implementation so the two can vary independently.Provide a simplified high-level interface that coordinates a complex subsystem behind a smaller and easier-to-use API.
IntentProvide an interface for creating families of related objects without specifying their concrete classes.Decouple abstractions from implementations so they can evolve independently.Provide a simplified high-level interface that coordinates a complex subsystem behind a smaller and easier-to-use API.
Decision factors
ProblemClient code needs to create families of related objects, but hardcoding concrete classes makes the code rigid and hard to swap.When an abstraction is tightly coupled to its implementation, changing one side forces changes in the other and makes the system harder to evolve.A client needs to perform a recurring workflow that spans several subsystem classes, but direct coordination makes the code noisy and tightly coupled.
Tradeoffs
  • Adds an extra abstraction layer.
  • Can overcomplicate simple object creation.
  • Makes family-wide swapping and consistency much easier.
  • Adds an extra layer of indirection.
  • Can increase the number of moving parts.
  • Makes abstractions and implementations easier to evolve independently.
  • Can become a dumping ground if boundaries are unclear.
  • May obscure useful lower-level capabilities from advanced consumers.
  • Simplifies the most common entry points for the system.
Practical fit
Languages
  • typescript
  • java
  • python
  • react
  • angular
  • csharp
  • dotnet
  • typescript
  • java
  • python
  • angular
  • react
  • react-native
  • csharp
  • dotnet
  • go
  • typescript
  • java
  • python
  • angular
  • react
  • react-native
  • csharp
  • dotnet
Platforms
  • applications
  • ui systems
  • integration layers
  • web
  • backend
  • mobile
  • integration
  • ui
  • applications
  • apis
  • service layers
Integration notesAbstract Factory is especially useful when your app must produce matching sets of related objects for a theme, provider, platform, or pipeline.Bridge is useful when you want one stable abstraction while swapping implementations for providers, environments, or device targets.Facades are useful when exposing a stable boundary over a multi-service or mixed-language backend, or when presenting a consistent UI entry point over multiple readiness checks.