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Beacon Backend

The backend of the Beacon app is a robust system designed to facilitate real-time location sharing among users. It leverages several key technologies to ensure efficiency, scalability, and reliability.

Tech Stack​

  • GraphQL with Apollo Server for efficient data querying and real-time subscriptions.
  • MongoDB Atlas for scalable cloud-based database management.
  • Node.js as the server environment for handling requests.
  • Redis for caching frequently accessed data.
  • Nodemailer for handling email notifications.
  • Render.com for backend hosting.

GraphQL with Apollo Server​

The backend is built using GraphQL with Apollo Server, enabling flexible and efficient data queries. Apollo Server supports real-time subscriptions, which push live location updates to clients.

Real-Time Subscriptions​

GraphQL subscriptions enable the backend to send real-time updates when a user's location changes. This ensures immediate location sharing among users, enhancing the app’s responsiveness.

Database Management with MongoDB Atlas​

The backend utilizes MongoDB Atlas for scalable and secure database management. MongoDB's document-oriented structure is ideal for handling dynamic location data efficiently.

Server Environment with Node.js​

The backend is powered by Node.js, known for its non-blocking, event-driven architecture, which is well-suited for real-time applications.

Caching with Redis​

To improve performance, Redis is used for caching frequently accessed data. This minimizes database queries, reducing response times and server load.

Email Services with Nodemailer​

Nodemailer is used to handle email functionalities, such as user verification and notifications. It provides an easy-to-integrate solution for sending emails from the backend.

Deployment on Render.com​

The backend is deployed on Render, ensuring a scalable and reliable hosting environment. Render provides automatic deployments and easy integration with cloud databases.

Example Code​

Below is an example of how a GraphQL query might be structured in this backend:

query {
  userLocation(userId: "12345") {
    latitude
    longitude
    updatedAt
  }
}

For real-time updates, a subscription example:

subscription {
  locationUpdated(userId: "12345") {
    latitude
    longitude
    updatedAt
  }
}