When using gRPC, one of its biggest advantages over traditional REST is the use of a single long-lived connection over HTTP/2.

🔍 What does that mean?

Unlike REST where every request opens a new connection, gRPC establishes one persistent connection between the client and the server. Through this connection, multiple messages can be exchanged — in both directions — without reopening it each time.

💡 Think of it like this:

Imagine going to a restaurant. With REST, you’d have to enter and exit the restaurant every time you wanted to order something new. But with gRPC, you sit down once, and continue to place multiple orders and have conversations — all through that single session.

📦 Benefits of gRPC’s Long-Lived Connection:

  • ✅ Reduced latency
  • ✅ Real-time communication
  • ✅ Efficient use of resources
  • ✅ Bidirectional streaming supported

🎮 Use Cases:

Perfect for real-time apps like online games, chat systems, IoT devices, and microservice communications — where speed and efficiency matter most.