How can you combine a room type hierarchy with a feature flag system to enable or disable features like video conferencing in certain room types dynamically?

hard📝 Trade-off Q9 of 15

LLD - Design — Hotel Booking System

AHardcode all features in subclasses without flags

BUse feature flags only, no inheritance

CUse inheritance for room types and add feature flags as attributes checked at runtime

DCreate separate classes for each feature without linking to room types

Step-by-Step Solution

Solution:

Step 1: Understand combining hierarchy and feature flags
Inheritance models room types; feature flags enable/disable features dynamically.
Step 2: Evaluate design options
Hardcoding or ignoring inheritance reduces flexibility; separate classes lose cohesion.
Final Answer:
Use inheritance for room types and add feature flags as attributes checked at runtime -> Option C
Quick Check:
Combine inheritance + feature flags for flexibility [OK]

Quick Trick: Use flags with inheritance to toggle features dynamically [OK]

Common Mistakes:

Hardcoding features without flags
Ignoring inheritance benefits
Separating features from room types

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How can you combine a room type hierarchy with a feature flag system to enable or disable features like video conferencing in certain room types dynamically?

Step 1: Understand combining hierarchy and feature flags

Step 2: Evaluate design options

Final Answer:

Quick Check:

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