Analysis

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Abstract FactoryAdapterBridgeBuilderChain of ResponsibilityCommandCompositeDecoratorFacadeFactory MethodFlyweightInterpreterIteratorMediatorMementoObserverPrototypeProxySingletonStateStrategyTemplate MethodVisitor

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Analysis

Pattern comparison

Reviewing 3 patterns.

Criteria
creationalAbstract FactoryView pattern
structuralAdapterView pattern
structuralProxyView pattern
Basics
Categorycreationalstructuralstructural
SummaryProvide an interface for creating families of related objects without specifying their concrete classes.Convert the interface of a class or module into another interface clients expect.—
IntentProvide an interface for creating families of related objects without specifying their concrete classes.Allow incompatible interfaces to work together without changing the consuming code.Provide a surrogate or placeholder for another object to control access to it.
Decision factors
ProblemClient code needs to create families of related objects, but hardcoding concrete classes makes the code rigid and hard to swap.A client needs to talk to a legacy class or external service whose interface does not match the rest of the codebase.A client needs to interact with an object indirectly because the real object may be expensive, sensitive, or remote.
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 hide useful vendor-specific capabilities if overused.
  • Keeps integration code isolated from core domain logic.
  • Adds another layer of indirection
  • Can make the design more complex when the extra control is unnecessary
Practical fit
Languages
  • typescript
  • java
  • python
  • react
  • angular
  • csharp
  • dotnet
  • typescript
  • java
  • python
  • go
  • csharp
  • dotnet
  • react
  • angular
  • react-native
  • typescript
  • java
  • python
  • angular
  • react
  • react-native
  • csharp
  • dotnet
Platforms
  • applications
  • ui systems
  • integration layers
  • applications
  • apis
  • service layers
  • integrations
  • Web
  • Backend
  • Mobile
  • UI kits
  • Cross-platform systems
Integration notesAbstract Factory is especially useful when your app must produce matching sets of related objects for a theme, provider, platform, or pipeline.Adapters are useful when exposing a stable boundary over a legacy API, vendor SDK, or payload format mismatch.Proxy is useful for lazy loading, access control, caching, logging, and remote service wrappers.