LLD - Design — Food Delivery System
In a system where the Order class adds items without checking the Menu, what is the main issue that can occur?
In a system where the Order class adds items without checking the Menu, what is the main issue that can occur?
medium📝 Analysis Q14 of 15
Step-by-Step Solution
Solution:
Step 1: Understand the role of validation
Order should verify items exist in Menu to avoid invalid orders.Step 2: Identify consequence of missing check
Without checking, Order can contain items not on Menu, causing errors or confusion.Final Answer:
Order may include items not available in the Menu -> Option CQuick Check:
Missing validation = invalid items in Order [OK]
Quick Trick: Always check Menu before adding items to Order [OK]
Common Mistakes:
- Assuming automatic price updates
- Thinking Order rejects items by default
- Confusing system behavior with unrelated effects
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