System design interview question
"Design the system behind 10-minute grocery delivery. Small dark stores hold a few thousand items each, scattered across a city. An order arrives and must be picked, packed, and out the door in about two minutes, then delivered in eight. Design the store-side system."
optimization under an extreme time constraint — and the recognition that this is almost the opposite of a large fulfilment centre. Small catalogue, tiny building, no time for batching or clever routing. The interesting content is: which store serves an order, how inventory accuracy is maintained when there is no time to correct errors, and what assortment each store carries.
On Practick another engineer interviews you live for 60 minutes on a question from this bank. They have the full interviewer guide beside the call: the answers to your clarifying questions, the numbers to hand out, a ladder of follow-ups and a scoring rubric. You get the model solution once the session settles. It is free: interview someone for an hour and you have earned your own.
Book a free mock interviewAll 132 system design interview questions
System design mock interviews · DSA interview questions · Free mock interview practice · Browse interviewers · Sign in