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Which advantage does the Chain of Responsibility pattern provide when handling requests in a system?

easy🧠 Conceptual Q1 of 15
LLD - Behavioral Design Patterns — Part 1
Which advantage does the Chain of Responsibility pattern provide when handling requests in a system?
AIt eliminates the need for any handler to pass requests along the chain.
BIt ensures that all requests are handled by a single, centralized handler.
CIt forces all handlers to process every request regardless of relevance.
DIt decouples the sender of a request from its receivers by allowing multiple objects to handle the request.
Step-by-Step Solution
Solution:

  1. Step 1: Understand the pattern's intent

    The Chain of Responsibility pattern allows multiple handlers to process a request without coupling the sender to a specific receiver.

  2. Step 2: Analyze options

    It decouples the sender of a request from its receivers by allowing multiple objects to handle the request. correctly states the decoupling benefit. It ensures that all requests are handled by a single, centralized handler. is incorrect because the pattern avoids a single centralized handler. It forces all handlers to process every request regardless of relevance. is wrong as handlers only process relevant requests. It eliminates the need for any handler to pass requests along the chain. is false because passing requests along the chain is fundamental.

  3. Final Answer:

    It decouples the sender of a request from its receivers by allowing multiple objects to handle the request. -> Option D

  4. Quick Check:

    Decoupling sender and receivers [OK]
Quick Trick: Decouples sender and receivers for flexible request handling [OK]
Common Mistakes:
MISTAKES
  • Assuming only one handler processes all requests
  • Believing the pattern centralizes request handling

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