LLD - Design — Parking Lot System
In a microservices architecture, if Service A calls Service B, which then calls Service C, what is the correct exit flow for a response originating from Service C?
In a microservices architecture, if Service A calls Service B, which then calls Service C, what is the correct exit flow for a response originating from Service C?
medium🧠 Conceptual Q5 of 15
Step-by-Step Solution
Solution:
Step 1: Understand call chain
Service A calls B, B calls C, so request flows A -> B -> C.Step 2: Reverse for response flow
Response flows back C -> B -> A -> Client.Final Answer:
Service C -> Service B -> Service A -> Client -> Option DQuick Check:
Exit flow reverses call chain [OK]
Quick Trick: Response flows back in reverse call order [OK]
Common Mistakes:
MISTAKES- Confusing call and response directions
- Skipping intermediate services in response
- Assuming client initiates exit flow
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