Key Takeaways

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Key Takeaways

Design Patterns Best Practices and Common Pitfalls

mindmap
  root((Design Patterns Best Practices))
    Problem-Driven
      Identify real problems first
      Don't force patterns
      Consider alternatives
    
    Combination
      Patterns work together
      Real systems use multiple patterns
      Understand interactions
    
    Trade-offs
      Complexity vs Benefits
      Performance implications
      Maintainability focus
    
    Evolution
      Start simple
      Refactor when needed
      Don't over-engineer upfront

Pattern Selection Guidelines:

Choose patterns based on problems, not preferences: Each pattern solves specific design problems
Don't over-engineer: Use patterns when they genuinely improve code quality
Patterns work together: Real systems often combine multiple patterns
Focus on maintainability: Patterns should make code easier to understand and modify
Consider trade-offs: Patterns add complexity but solve bigger problems

Common Anti-Patterns to Avoid:

graph LR
    A[Anti-Patterns] --> B[Pattern Obsession]
    A --> C[God Object Facade]
    A --> D[Singleton Abuse]
    A --> E[Strategy Explosion]
    A --> F[Observer Chaos]
    
    B --> B1[Using patterns everywhere]
    C --> C1[Facade doing too much]
    D --> D1[Global state problems]
    E --> E1[Too many strategy classes]
    F --> F1[Circular dependencies]