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What is the main purpose of using locks in concurrent systems?

easy🧠 Conceptual Q11 of Q15
LLD - Design — Parking Lot System
What is the main purpose of using locks in concurrent systems?
ATo allow unlimited access to shared resources
BTo prevent multiple threads from accessing shared data simultaneously
CTo speed up the execution of a single thread
DTo reduce memory usage in the system
Step-by-Step Solution
Solution:

  1. Step 1: Understand concurrency risks

    When multiple threads access shared data at the same time, it can cause errors or inconsistent results.

  2. Step 2: Role of locks

    Locks ensure only one thread accesses the shared data at a time, preventing conflicts and data corruption.

  3. Final Answer:

    To prevent multiple threads from accessing shared data simultaneously -> Option B

  4. Quick Check:

    Locks protect shared data = C [OK]
Quick Trick: Locks protect shared data from simultaneous access [OK]
Common Mistakes:
MISTAKES
  • Thinking locks speed up single-thread execution
  • Believing locks allow unlimited resource access
  • Confusing locks with memory optimization

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