Delivery agent assignment in LLD - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is the primary goal of a delivery agent assignment system?

To efficiently assign delivery agents to orders ensuring timely delivery and optimal resource utilization.

beginner

Name two common factors considered when assigning a delivery agent to an order.

Agent proximity to pickup location and current workload or availability.

intermediate

Explain the role of a queue in delivery agent assignment systems.

Queues hold incoming orders waiting to be assigned to agents, helping manage load and order priority.

intermediate

What is a common strategy to handle delivery agent unavailability during assignment?

Reassign the order to the next best available agent or retry assignment after a timeout.

intermediate

Why is scalability important in delivery agent assignment systems?

Because the system must handle increasing orders and agents without delays or failures.

Which factor is most important when assigning a delivery agent?

A Agent's favorite color

B Agent's shoe size

C Agent proximity to pickup location

D Agent's birth month

Proximity helps reduce delivery time and improves efficiency.

What data structure is commonly used to manage incoming orders for assignment?

A Graph

B Queue

C Tree

D Stack

Queues manage orders in the order they arrive, supporting fair assignment.

If a delivery agent is busy, what should the system do?

A Assign order to another available agent

B Wait indefinitely

C Cancel the order

D Assign to the same busy agent

Reassigning ensures timely delivery and avoids delays.

Why must the delivery agent assignment system be scalable?

A To reduce the number of delivery agents

B To use more colors in the UI

C To slow down the system

D To handle more orders and agents as the business grows

Scalability ensures the system performs well under increased load.

Which of these is NOT a typical factor in delivery agent assignment?

A Agent's favorite food

B Agent's workload

C Agent's current location

D Order priority

Agent's favorite food is irrelevant to assignment decisions.

Describe the key components and flow of a delivery agent assignment system.

Think about how orders come in, how agents are tracked, and how assignments happen.

Explain how the system should handle a scenario where no delivery agents are currently available.

Consider what happens when demand exceeds supply temporarily.