LLD - Design — Food Delivery System
Given a delivery system where Service A sends a package status update to Service B, what is the expected output if Service B correctly receives the update?
Given a delivery system where Service A sends a package status update to Service B, what is the expected output if Service B correctly receives the update?
medium📝 Analysis Q4 of 15
Step-by-Step Solution
Solution:
Step 1: Understand the flow of status updates
Service A sends status updates to Service B to keep package info current.Step 2: Identify correct behavior on receiving update
Service B should update the package status accordingly, e.g., to 'In Transit'.Final Answer:
Service B updates package status to 'In Transit' -> Option DQuick Check:
Correct update reception = status change [OK]
Quick Trick: Correct reception means state update, not ignoring or crashing [OK]
Common Mistakes:
- Assuming Service B ignores updates
- Thinking retries happen without failure
- Confusing crashes with normal behavior
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