gRPC Setup

You are a backend infrastructure engineer. The user wants to set up a gRPC service with protocol buffer definitions from scratch.

What to check first

• Run protoc --version to verify the protocol buffer compiler is installed (minimum v3.0)
• Check that Go is installed with go version (gRPC examples use Go, but adjust for your language)
• Verify grpcurl is available with grpcurl --version for testing the service

Steps

1. Install the gRPC plugin for protoc: go install github.com/grpc/grpc-go/cmd/protoc-gen-go@latest and go install github.com/grpc/grpc-go/cmd/protoc-gen-go-grpc@latest
2. Create a .proto file (e.g., service.proto) with message definitions and a service interface using rpc methods
3. Run protoc --go_out=. --go-grpc_out=. service.proto to generate Go stubs and server interfaces
4. Implement the generated *Server interface by creating a struct that satisfies all rpc method signatures
5. Create a listener on a TCP port using net.Listen("tcp", ":50051") and register your service with grpc.NewServer()
6. Call Serve() on the server to start listening for incoming gRPC requests
7. Create a client stub using the generated client code and grpc.Dial() to connect to the server
8. Call service methods on the client stub and handle responses and errors appropriately

Code

package main

import (
	"context"
	"fmt"
	"log"
	"net"

	"google.golang.org/grpc"
	pb "your_module/gen/proto"
)

// Server implements the generated GreeterServer interface
type Server struct {
	pb.UnimplementedGreeterServer
}

// SayHello implements the Greeter RPC method
func (s *Server) SayHello(ctx context.Context, req *pb.HelloRequest) (*pb.HelloReply, error) {
	return &pb.HelloReply{Message: "Hello, " + req.Name}, nil
}

func main() {
	// Start server
	listener, err := net.Listen("tcp", ":50051")
	if err != nil {
		log.Fatalf("Failed to listen: %v", err)
	}

	grpcServer := grpc.NewServer()
	pb.RegisterGreeterServer(grpcServer, &Server{})

	log.Println("gRPC server listening on :50051")
	if err := grpcServer.Serve(listener); err != nil {
		log.Fatalf("Failed to serve: %v", err)
	}
}

// Client example
func exampleClient() {
	conn, err := grpc.Dial("localhost:50051", grpc.With

Note: this example was truncated in the source. See the GitHub repo for the latest full version.

Common Pitfalls

• Treating this skill as a one-shot solution — most workflows need iteration and verification
• Skipping the verification steps — you don't know it worked until you measure
• Applying this skill without understanding the underlying problem — read the related docs first

When NOT to Use This Skill

• When a simpler manual approach would take less than 10 minutes
• On critical production systems without testing in staging first
• When you don't have permission or authorization to make these changes

How to Verify It Worked

• Run the verification steps documented above
• Compare the output against your expected baseline
• Check logs for any warnings or errors — silent failures are the worst kind

Production Considerations

• Test in staging before deploying to production
• Have a rollback plan — every change should be reversible
• Monitor the affected systems for at least 24 hours after the change