What is the go micro (go-micro) framework?

Question

Accepted Answer

go-micro is a **microservices framework** with built-in service discovery, load balancing, messaging.

```go
// Server
package main

import (
    "context"
    "go-micro.dev/v5"
    proto "github.com/user/service/proto"
)

type Greeter struct{}

func (g *Greeter) Hello(ctx context.Context, req *proto.HelloRequest, 
    resp *proto.HelloResponse) error {
    resp.Greeting = "Hello " + req.Name
    return nil
}

func main() {
    service := micro.NewService(
        micro.Name("greeter"),
        micro.Version("latest"),
    )

service.Init()

proto.RegisterGreeterHandler(service.Server(), &Greeter{})

if err := service.Run(); err != nil {
        log.Fatal(err)
    }
}

// Client
func call() {
    service := micro.NewService(micro.Name("greeter-client"))
    service.Init()

greeter := proto.NewGreeterService("greeter", service.Client())

resp, err := greeter.Hello(context.Background(),
        &proto.HelloRequest{Name: "World"},
    )
    if err != nil {
        log.Fatal(err)
    }
    fmt.Println(resp.Greeting)
}
```

**Features:**
- Service discovery (Consul, etcd, MDNS).
- Load balancing.
- Request/Response, Pub/Sub.
- Plugins (gRPC, HTTP, RabbitMQ).

Go: What is the go micro (go-micro) framework?