Design real-time delivery tracking system
System Design: Real-Time Courier Route Visibility Platform
Context
Design a parcel delivery platform that provides customers and operations with real-time visibility into each courier’s route and live Estimated Time of Arrival (ETA) for orders. The system must be capable of concurrently handling tens of thousands of couriers.
Requirements
- GPS Update Ingestion: Mobile applications must reliably publish GPS updates from the field.
- Backend Processing: The backend system needs to ingest, process, and stream location data in near real-time.
- Route and ETA Computation: The system must compute routes and ETAs, then display this information to customers and operations dashboards.
- API Exposure: Expose necessary APIs, such as
GET /couriers/{id}/tracefor courier location history andGET /orders/{id}/etafor order ETA. - Key Considerations: The design must explicitly address the following aspects:
- Scale: Support for tens of thousands of concurrent couriers.
- Data Storage: Mechanisms for storing historical location data for playback.
- Privacy and Access Control: Secure handling of sensitive location data and appropriate access restrictions.
- Latency vs. Consistency: Trade-offs inherent in real-time data processing and display.
- Offline Mode and Battery Constraints: Handling intermittent connectivity and optimizing for mobile device battery life.
- Map Matching and Geofencing: Techniques for accurately placing locations on maps and defining geographical boundaries.
- Failure Handling and Monitoring: Robustness against failures and comprehensive system observability.
AI interview prep
Core dilemma
Balancing the high-volume, low-latency ingestion and processing of real-time geospatial data with the need for accurate, consistent, and queryable historical data, all while ensuring scalability, fault tolerance, and cost-effectiveness.
3 tradeoffs and 3 stress tests locked
Interview prep
Unlock the interviewer X-Ray rubric, tradeoff matrix, stress tests, clarifying questions, and key concepts.
Design real-time delivery tracking system
System Design: Real-Time Courier Route Visibility Platform
Context
Design a parcel delivery platform that provides customers and operations with real-time visibility into each courier’s route and live Estimated Time of Arrival (ETA) for orders. The system must be capable of concurrently handling tens of thousands of couriers.
Requirements
- GPS Update Ingestion: Mobile applications must reliably publish GPS updates from the field.
- Backend Processing: The backend system needs to ingest, process, and stream location data in near real-time.
- Route and ETA Computation: The system must compute routes and ETAs, then display this information to customers and operations dashboards.
- API Exposure: Expose necessary APIs, such as
GET /couriers/{id}/tracefor courier location history andGET /orders/{id}/etafor order ETA. - Key Considerations: The design must explicitly address the following aspects:
- Scale: Support for tens of thousands of concurrent couriers.
- Data Storage: Mechanisms for storing historical location data for playback.
- Privacy and Access Control: Secure handling of sensitive location data and appropriate access restrictions.
- Latency vs. Consistency: Trade-offs inherent in real-time data processing and display.
- Offline Mode and Battery Constraints: Handling intermittent connectivity and optimizing for mobile device battery life.
- Map Matching and Geofencing: Techniques for accurately placing locations on maps and defining geographical boundaries.
- Failure Handling and Monitoring: Robustness against failures and comprehensive system observability.