[Solved] You are designing a Library Management System for a large university... To optimize performance, would you choose a centralized LoanManager or a distributed LoanManager per library branch, and why? | OOP & Design Patterns

OOP & Design Patterns - Design a Library Management System - LLD with Relationships & Edge Cases

You are designing a Library Management System for a large university with thousands of concurrent users. To optimize performance, would you choose a centralized LoanManager or a distributed LoanManager per library branch, and why?

ACentralized LoanManager to maintain a single source of truth and simplify concurrency control

BCentralized LoanManager with eventual consistency to improve scalability

CDistributed LoanManager per branch to reduce contention and localize data access

DDistributed LoanManager with no synchronization to maximize throughput

Step-by-Step Solution

Solution:

Step 1: Analyze scale and concurrency requirements
Thousands of users and multiple branches imply high contention on centralized resources.
Step 2: Evaluate centralized LoanManager approach
Centralized manager simplifies consistency but becomes a bottleneck under load.
Step 3: Evaluate distributed LoanManager per branch
Distributed managers reduce contention by localizing data and operations per branch, improving performance.
Step 4: Reject no synchronization and eventual consistency options
No synchronization risks data corruption; eventual consistency may cause stale data issues in loans.
Final Answer:
Option C -> Option C
Quick Check:
Distributed per branch reduces contention and scales better [OK]

Quick Trick: High concurrency -> distributed managers reduce bottlenecks [OK]

Common Mistakes:

MISTAKES

Choosing centralized for simplicity ignoring scale
Ignoring synchronization needs in distributed systems
Assuming eventual consistency is acceptable for loans

Trap Explanation:

PITFALL

Candidates often pick centralized for simplicity, missing scalability bottlenecks.

Interviewer Note:

CONTEXT

Assesses trade-offs in distributed system design and concurrency management.

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Solution Trace

More OOP & Design Patterns Quizzes

To optimize performance, would you choose a centralized LoanManager or a distributed LoanManager per library branch, and why?

Step 1: Analyze scale and concurrency requirements

Step 2: Evaluate centralized LoanManager approach

Step 3: Evaluate distributed LoanManager per branch

Step 4: Reject no synchronization and eventual consistency options

Final Answer:

Quick Check:

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