Analysis

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Evaluate design patterns side by side across intent, tradeoffs, languages, and integration fit.

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Abstract FactoryAdapterBridgeBuilderChain of ResponsibilityCommandCompositeDecoratorFacadeFactory MethodFlyweightInterpreterIteratorMediatorMementoObserverPrototypeProxySingletonStateStrategyTemplate MethodVisitor

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Analysis

Pattern comparison

Reviewing 3 patterns.

Criteria
structuralAdapterView pattern
creationalBuilderView pattern
creationalFactory MethodView pattern
Basics
Categorystructuralcreationalcreational
SummaryConvert the interface of a class or module into another interface clients expect.Construct a complex object step by step so the same construction process can create different representations.—
IntentAllow incompatible interfaces to work together without changing the consuming code.Separate the construction of a complex object from its final representation.Define a creation method behind a common interface so specialized creators can decide which concrete product to instantiate without changing the surrounding workflow.
Decision factors
ProblemA client needs to talk to a legacy class or external service whose interface does not match the rest of the codebase.Constructing complex objects directly can make required steps, optional values, and validation hard to manage.A workflow needs to create one of several related concrete objects, but constructing them directly in client code spreads creation logic and tightly couples the caller to specific implementations.
Tradeoffs
  • Adds an extra layer of indirection.
  • Can hide useful vendor-specific capabilities if overused.
  • Keeps integration code isolated from core domain logic.
  • Adds more classes or steps to the construction process.
  • Can be overkill for simple objects.
  • Improves clarity when object construction is complex or incremental.
  • Adds extra indirection and more types compared with direct construction
  • Can feel unnecessarily abstract when object creation is simple and unlikely to vary
Practical fit
Languages
  • typescript
  • java
  • python
  • go
  • csharp
  • dotnet
  • react
  • angular
  • react-native
  • typescript
  • python
  • java
  • react
  • angular
  • go
  • csharp
  • dotnet
  • typescript
  • java
  • python
  • angular
  • react
  • react-native
  • csharp
  • dotnet
Platforms
  • applications
  • apis
  • service layers
  • integrations
  • frontend
  • backend
  • integration
  • Applications
  • APIs
  • Frameworks
  • Service layers
Integration notesAdapters are useful when exposing a stable boundary over a legacy API, vendor SDK, or payload format mismatch.Builder is most useful when construction must happen in controlled steps and the final object has many optional or ordered parts.Factory Method is useful when framework hooks, integrations, or environment-specific workflows need to create interchangeable implementations behind a stable contract.