Uber Eats) — Simple#

Problem statement (interviewer prompt)

Design DoorDash / Swiggy / Uber Eats: customers order from local restaurants, the system matches a nearby driver, the driver picks up + delivers, and everyone sees a live ETA. Cover restaurant search, dispatch / matching, live tracking, and surge pricing.

flowchart LR
  U([Customer])
  R[Restaurant App]
  D([Driver App])
  ORD[Order Service]
  DISP[Dispatch / Matching]
  GEO[Geo Index]
  PAY[Payment]
  U --> ORD --> PAY
  ORD --> R
  ORD --> DISP --> D
  D --> GEO
  DISP --> GEO

    classDef client fill:#dbeafe,stroke:#1e40af,stroke-width:1px,color:#0f172a;
    classDef edge fill:#cffafe,stroke:#0e7490,stroke-width:1px,color:#0f172a;
    classDef service fill:#fef3c7,stroke:#92400e,stroke-width:1px,color:#0f172a;
    classDef datastore fill:#fee2e2,stroke:#991b1b,stroke-width:1px,color:#0f172a;
    classDef cache fill:#fed7aa,stroke:#9a3412,stroke-width:1px,color:#0f172a;
    classDef queue fill:#ede9fe,stroke:#5b21b6,stroke-width:1px,color:#0f172a;
    classDef compute fill:#d1fae5,stroke:#065f46,stroke-width:1px,color:#0f172a;
    classDef storage fill:#e5e7eb,stroke:#374151,stroke-width:1px,color:#0f172a;
    classDef external fill:#fce7f3,stroke:#9d174d,stroke-width:1px,color:#0f172a;
    classDef obs fill:#f3e8ff,stroke:#6b21a8,stroke-width:1px,color:#0f172a;
    class U,D client;
    class R,ORD,DISP,GEO,PAY service;