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System Design Question

Design Google Maps

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Functional Requirements

  1. Map Rendering

    • Display geographical maps with varying levels of detail.
    • Support for different map views: satellite, terrain, and street view.
    • Interactive panning and zooming capabilities.
  2. Search Functionality

    • Ability to search for locations, addresses, and points of interest (POIs).
    • Autocomplete suggestions for search queries.
  3. Directions and Navigation

    • Provide step-by-step directions for various modes of transport: driving, walking, cycling, and public transit.
    • Real-time turn-by-turn navigation.
  4. Traffic Information

    • Display real-time traffic conditions and congestion levels.
    • Suggest alternative routes based on current traffic conditions.
  5. User Location Services

    • Ability to detect and display the user's current location.
    • Support for location sharing with other users.
  6. Offline Maps

    • Allow users to download maps for offline use.
    • Ensure offline access to basic navigation and search features.
  7. Local Business Information

    • Display information about local businesses, including hours, reviews, and contact details.
    • Support for user-generated reviews and ratings.
  8. Integration with External Services

    • Provide APIs for third-party applications to integrate map services.
    • Support for embedding maps in external websites and applications.

Non-Functional Requirements

  1. Scalability

    • Handle millions of concurrent users and requests globally.
    • Efficiently manage large volumes of geographical data and user-generated content.
  2. Performance

    • Ensure low latency for map rendering and search queries.
    • Provide real-time updates for traffic and navigation.
  3. Reliability and Availability

    • Achieve high availability with minimal downtime.
    • Implement redundancy and failover mechanisms to ensure service continuity.
  4. Security

    • Protect user data and privacy, especially location information.
    • Implement secure APIs to prevent unauthorized access.
  5. Localization and Internationalization

    • Support multiple languages and regional formats.
    • Adapt to local regulations and mapping standards.
  6. Data Accuracy

    • Ensure high accuracy and up-to-date information for maps and traffic data.
    • Regularly update geographical data and POIs.
  7. Extensibility

    • Allow for easy integration of new features and data sources.
    • Support for third-party plugins and extensions.

These requirements will guide the subsequent steps in designing a robust and user-friendly Google Maps system.

System Design Diagrams

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