[Solved] What is wrong with this hold release logic?def release_hold(hold_id): hold = get_hold(hold_id) if hold.is_expired(): return 'Cannot release expired hold' delete_hold(hold_id) | LLD

LLD - Design — Library Management System

What is wrong with this hold release logic?

def release_hold(hold_id):
    hold = get_hold(hold_id)
    if hold.is_expired():
        return 'Cannot release expired hold'
    delete_hold(hold_id)

Aget_hold function is missing

BExpired holds should be released, not blocked

CFunction does not return anything after delete_hold

Ddelete_hold should be called before checking expiry

Step-by-Step Solution

Solution:

Step 1: Understand hold release purpose
Expired holds must be released to free resources.
Step 2: Analyze logic blocking expired hold release
Code prevents releasing expired holds, which is incorrect.
Final Answer:
Expired holds should be released, not blocked -> Option B
Quick Check:
Expired holds must be released [OK]

Quick Trick: Always release expired holds to free resources [OK]

Common Mistakes:

MISTAKES

Blocking release of expired holds
Misordering delete and checks
Ignoring return values

Master "Design — Library Management System" in LLD

9 interactive learning modes - each teaches the same concept differently

Learn Why Deep Arch Try Challenge Design Recall Scale

More LLD Quizzes

What is wrong with this hold release logic?

Step 1: Understand hold release purpose

Step 2: Analyze logic blocking expired hold release

Final Answer:

Quick Check:

Want More Practice?