A structured decision guide for when to use the decorator pattern in C#. Covers key signals that indicate the pattern is appropriate (runtime behavior composition, cross-cutting concerns, subclass explosion, Open/Closed Principle), when to avoid it (simple permanent behavior, performance hot paths, middleware being a better
Table of contents
Signs You Need the Decorator Pattern in C#When NOT to Use the Decorator PatternDecision Framework for the Decorator Pattern in C#Scenario 1: Adding Logging and Metrics to a Payment ProcessorScenario 2: Composable Caching Layer for ReportsScenario 3: Authorization and Validation Wrapping Service CallsDecorator vs Alternatives: When to Choose WhatRed Flags: When the Decorator Pattern Is OverkillFrequently Asked QuestionsWrapping Up the Decorator Pattern Decision GuideSort: