Analysis
Compare patterns
Evaluate design patterns side by side across intent, tradeoffs, languages, and integration fit.
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Analysis
Pattern comparison
Reviewing 3 patterns.
| Criteria | |||
|---|---|---|---|
| Basics | |||
| Category | behavioral | creational | behavioral |
| Summary | Pass a request through a sequence of handlers until one handles it or the chain ends. | — | — |
| Intent | Pass requests along a chain of handlers until one of them handles the request or the request reaches the end of the chain. | Specify the kinds of objects to create using a prototypical instance, and create new objects by cloning that prototype. | Define the skeleton of an algorithm in a base class and let subclasses override selected steps without changing the overall structure. |
| Decision factors | |||
| Problem | A request must pass through multiple possible handlers, but the sender should not need to know which handler will process it. | Creating new objects from scratch can be expensive or repetitive when the system needs many similar variants. | Several classes share the same algorithm structure, but some steps need to vary between implementations. |
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| Integration notes | Chain of Responsibility is useful for validation pipelines, support routing, approval flows, and any system where requests may be processed by different handlers in sequence. | Prototype is useful when object creation is expensive, when many near-identical objects are needed, or when cloning preconfigured templates is simpler than rebuilding them. | Template Method is useful when you have repeated workflows with a common sequence of steps, such as processing orders, generating reports, and importing data. |