You want to design a scalable delivery agent assignment system for a city with thousands of agents and orders per minute. Which approach best improves scalability?

hard📝 Trade-off Q15 of 15

LLD - Design — Food Delivery System

AUse a centralized server to check all agents for every order

BPartition the city into zones and assign agents within zones only

CAssign agents randomly without considering location

DAssign the oldest registered agent to every order

Step-by-Step Solution

Solution:

Step 1: Understand scalability challenges
Checking all agents for every order is slow and resource-heavy at large scale.
Step 2: Choose a partitioning strategy
Dividing the city into zones limits search space, making assignment faster and scalable.
Step 3: Evaluate other options
Random or oldest agent assignment ignores location, causing delays and inefficiency.
Final Answer:
Partition the city into zones and assign agents within zones only -> Option B
Quick Check:
Zone partitioning = scalable assignment [OK]

Quick Trick: Divide city into zones to limit search scope [OK]

Common Mistakes:

Using centralized server causing bottlenecks
Ignoring agent location in assignment
Assigning agents randomly or by registration time

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More LLD Quizzes

You want to design a scalable delivery agent assignment system for a city with thousands of agents and orders per minute. Which approach best improves scalability?

Step 1: Understand scalability challenges

Step 2: Choose a partitioning strategy

Step 3: Evaluate other options

Final Answer:

Quick Check:

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