A practical guide to applying the decorator pattern well in C# production codebases. Covers single-responsibility decorators, abstract base classes, naming conventions ('{Concern}{Component}Decorator'), project folder structure, composition order, thread safety with ConcurrentDictionary, and testing strategies using mocks. Also highlights common pitfalls: breaking interface contracts, swallowing exceptions silently, circular DI chains, deep chain performance overhead, and leaking decorator implementation details. Includes guidance on integrating with IServiceCollection and Scrutor for centralized decorator composition.
Table of contents
Keep Decorators Single-PurposeUse Abstract Decorator Base ClassesNaming Conventions for DecoratorsOrganize Decorators in Your Project StructureManage Decorator Order and CompositionThread Safety in DecoratorsTesting DecoratorsAvoid These Common PitfallsFrequently Asked QuestionsWrapping Up Decorator Pattern Best PracticesSort: