Payments Service Payout Endpoint | Dataford Interview Questions

Build a Payments Service POST payout endpoint (input dasherId, output dollar amount) that fetches the Dasher's order activities from an upstream endpoint and pays $0.3 per minute, multiplied by the number of ongoing deliveries, with test coverage. Asked in the code craft stage. Reported follow-ups: Any edge cases you can think of in your implementation? What would happen if the upstream service had high latency? What would you do?

I/O Contract

Implement calculate_payout(dasher_id, order_activities). order_activities is a list of objects containing nonnegative duration_minutes and ongoing_deliveries. Return the payout as a numeric dollar amount rounded to two decimal places.

Constraints

dasher_id is a nonempty string
0 <= len(order_activities) <= 100000
0 <= duration_minutes <= 1000000
0 <= ongoing_deliveries <= 1000
Each activity contains duration_minutes and ongoing_deliveries
The returned amount is rounded to two decimal places

Function Signature

def calculate_payout(dasher_id, order_activities):

Your question is Payments Service Payout Endpoint. Start with the requirements in the Question tab.

Run and submit as often as you like. When you're ready, talk me through your approach or go straight to the code.

Problem

I/O Contract

Constraints

dasher_id is a nonempty string
0 <= len(order_activities) <= 100000
0 <= duration_minutes <= 1000000
0 <= ongoing_deliveries <= 1000
Each activity contains duration_minutes and ongoing_deliveries
The returned amount is rounded to two decimal places

Function Signature

def calculate_payout(dasher_id, order_activities):

Your question is Payments Service Payout Endpoint. Start with the requirements in the Question tab.

Run and submit as often as you like. When you're ready, talk me through your approach or go straight to the code.