Golang을 사용하여 마이크로서비스를 개발하면 어떤 실용적인 기능을 제공할 수 있나요?

import (
    "fmt"
    "github.com/hashicorp/consul/api"
)

func main() {
    config := api.DefaultConfig()
    client, _ := api.NewClient(config)

    services, _, _ := client.Catalog().Services(&api.QueryOptions{})

    for serviceName := range services {
        serviceEntries, _, _ := client.Health().Service(serviceName, "", true, &api.QueryOptions{})
        for _, entry := range serviceEntries {
            fmt.Println("Service: ", entry.Service.Service)
            fmt.Println("Address: ", entry.Service.Address)
            fmt.Println("Port: ", entry.Service.Port)
        }
    }
}

import (
    "fmt"
    "github.com/streadway/amqp"
)

func main() {
    conn, _ := amqp.Dial("amqp://guest:guest@localhost:5672/")
    defer conn.Close()

    channel, _ := conn.Channel()
    defer channel.Close()

    queue, _ := channel.QueueDeclare("hello", false, false, false, false, nil)
    messages, _ := channel.Consume(queue.Name, "", true, false, false, false, nil)

    for message := range messages {
        fmt.Println("Received message: ", string(message.Body))
    }
}

import (
    "github.com/go-redis/redis"
)

func main() {
    client := redis.NewClient(&redis.Options{
        Addr:     "localhost:6379",
        Password: "",
        DB:       0,
    })

    err := client.Set("key", "value", 0).Err()
    if err != nil {
        panic(err)
    }

    val, err := client.Get("key").Result()
    if err != nil {
        panic(err)
    }
    fmt.Println("Value: ", val)
}