I’ve generally regarded gRPC as a high-performance protocol mainly suited for connecting microservices—something you’d keep internal rather than expose publicly

I’ve generally regarded gRPC as a high-performance protocol mainly suited for connecting microservices—something you’d keep internal rather than expose publicly. But it shines in use cases like live captioning, where a transcription service has to stay in sync with a video feed and can’t afford dropped messages. In my experience, using plain WebSockets for high-throughput internal communication was a mistake because while WebSockets use TCP underneath, they don’t inherently handle reconnection or message acknowledgments. With gRPC, those features come built-in, saving you from implementing them yourself.