golang框架中跨服务的最佳通信协议和工具

// UserService.proto

syntax = "proto3";

service UserService {
  rpc CreateUser(CreateUserRequest) returns (CreateUserResponse);
}

// user_service/main.go

package main

import (
    "context"

    userpb "<a style='color:#f60; text-decoration:underline;' href="https://www.php.cn/zt/15841.html" rel="external nofollow"  target="_blank">git</a>hub.com/user-service/user"
    "google.<a style='color:#f60; text-decoration:underline;' href="https://www.php.cn/zt/16009.html" rel="external nofollow"  target="_blank">golang</a>.org/grpc"
)

func main() {
    conn, err := grpc.Dial("user-service:9000", grpc.WithInsecure())
    if err != nil {
        // Handle error
    }
    defer conn.Close()

    client := userpb.NewUserServiceClient(conn)

    req := userpb.CreateUserRequest{Name: "John Doe"}
    resp, err := client.CreateUser(context.Background(), &req)
    if err != nil {
        // Handle error
    }
    fmt.Printf("User created with ID: %d\n", resp.Id)
}

resp, err := http.Get("https://example.com/api/users")
if err != nil {
    // Handle error
}

defer resp.Body.Close()

bodyBytes, err := ioutil.ReadAll(resp.Body)
if err != nil {
    // Handle error
}

var users []User
if err := json.Unmarshal(bodyBytes, &users); err != nil {
    // Handle error
}
fmt.Println(users)

// Install `github.com/nats-io/nats` package

import (
    "context"
    "time"

    "github.com/nats-io/nats.go"
)

func main() {
    // Create a NATS connection
    conn, err := nats.Connect(nats.DefaultURL)
    if err != nil {
        // Handle error
    }

    // Subscribe to a subject
    subject := "user.created"
    err = conn.Subscribe(subject, func(msg *nats.Msg) {
        fmt.Println("Received message: ", string(msg.Data))
    })
    if err != nil {
        // Handle error
    }

    // Publish a message
    ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
    defer cancel()
    if err := conn.Publish(subject, []byte(`{"name": "John Doe"}`)); err != nil {
        // Handle error
    }

    // Wait for a few seconds to receive messages
    time.Sleep(5 * time.Second)

    conn.Close()
}