How can you combine the Decorator and Strategy patterns?

Decorator and Strategy are complementary: Decorator adds behavior by wrapping objects, while Strategy swaps algorithms inside an object. A common combination is a configurable pipeline. Imagine a data processor where you can decorate a base processor with logging, caching, or retry behavior (Decorator), and within each step the specific algorithm is pluggable (Strategy). For example, an HTTP client decorator adds retry logic, while the retry Strategy determines whether to use exponential backoff or fixed-interval retry. This combination produces highly flexible and testable code. The key distinction: Decorator modifies what an object does structurally; Strategy modifies how it does it algorithmically.