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Why is concurrency control important in a test booking system?

easy📝 Conceptual Q1 of 15
LLD - Design — Hotel Booking System
Why is concurrency control important in a test booking system?
ATo prevent multiple users from booking the same slot simultaneously
BTo increase the number of available test slots
CTo reduce the cost of the booking system
DTo allow users to book multiple slots at once
Step-by-Step Solution
Solution:

  1. Step 1: Understand concurrency in booking context

    Concurrency means multiple users trying to book the same slot at the same time.

  2. Step 2: Identify the problem concurrency causes

    Without control, two users could book the same slot, causing conflicts and errors.

  3. Final Answer:

    To prevent multiple users from booking the same slot simultaneously -> Option A

  4. Quick Check:

    Concurrency control = Prevent double booking [OK]
Quick Trick: Concurrency avoids double booking conflicts [OK]
Common Mistakes:
  • Thinking concurrency increases slots
  • Confusing concurrency with cost reduction
  • Assuming concurrency allows multiple bookings per user

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