Golang 框架在分布式系统中的服务发现和负载均衡

import (
    "context"
    "fmt"
    "time"

    "github.com/hashicorp/consul/api"
)

func main() {
    client, err := api.NewClient(api.DefaultConfig())
    if err != nil {
        // 处理错误
    }

    registration := new(api.AgentServiceRegistration)
    registration.Name = "my-service"
    registration.Port = 8000

    agent := client.Agent()
    register, err := agent.ServiceRegister(registration)
    if err != nil {
        // 处理错误
    }
    fmt.Println("服务已成功注册。")

    // ...

    // 在一段时间后取消注册
    time.Sleep(10 * time.Second)
    if register != nil && register.ID != "" {
        agent.ServiceDeregister(register.ID)
        fmt.Println("服务已成功取消注册。")
    }
}

import (
    "context"
    "fmt"

    traefik "github.com/traefik/traefik/v2/pkg/provider/kubernetes/crd/generated/clientset/versioned"
)

func main() {
    client, err := traefik.NewForConfig(kubeConfig)
    if err != nil {
        // 处理错误
    }

    middleware := &traefikv1beta1.Middleware{
        ObjectMeta: metav1.ObjectMeta{
            Name: "my-middleware",
        },
        Spec: traefikv1beta1.MiddlewareSpec{
            LoadBalancer: &traefikv1beta1.MiddlewareLoadBalancer{
                Servers: traefikv1beta1.Servers{
                    {
                        URL: "http://backend-service.example.com",
                    },
                },
            },
        },
    }

    _, err = client.TraefikV1beta1().Middlewares("default").Create(context.Background(), middleware, metav1.CreateOptions{})
    if err != nil {
        // 处理错误
    }

    fmt.Println("负载均衡配置已成功创建。")
}