Consider this scenario: You have a request that can be handled by multiple objects in a chain. Each object decides if it can handle the request or passes it on. Which pattern fits this design?

medium📝 Analysis Q13 of Q15

LLD - Behavioral Design Patterns — Part 2

Consider this scenario: You have a request that can be handled by multiple objects in a chain. Each object decides if it can handle the request or passes it on. Which pattern fits this design?
Request -> Handler1 -> Handler2 -> Handler3

ACommand pattern

BStrategy pattern

CObserver pattern

DChain of Responsibility pattern

Step-by-Step Solution

Solution:

Step 1: Analyze the request handling flow
The request passes through a chain of handlers, each deciding to handle or forward it.
Step 2: Identify the matching behavioral pattern
The Chain of Responsibility pattern allows multiple objects to handle a request in sequence until one handles it.
Final Answer:
Chain of Responsibility pattern -> Option D
Quick Check:
Request passes chain = Chain of Responsibility [OK]

Quick Trick: Request passes chain? Use Chain of Responsibility [OK]

Common Mistakes:

MISTAKES

Confusing Chain with Command
Using Observer for request handling
Choosing Strategy incorrectly

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Consider this scenario: You have a request that can be handled by multiple objects in a chain. Each object decides if it can handle the request or passes it on. Which pattern fits this design?

Step 1: Analyze the request handling flow

Step 2: Identify the matching behavioral pattern

Final Answer:

Quick Check:

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