Golang 마이크로서비스 개발로 어떤 복잡한 기능을 달성할 수 있나요?

package main import ( "fmt" "sync" ) func main() { wg := sync.WaitGroup{} wg.Add(2) go func() { defer wg.Done() fmt.Println("开始执行任务A") // 执行任务A的逻辑 }() go func() { defer wg.Done() fmt.Println("开始执行任务B") // 执行任务B的逻辑 }() wg.Wait() fmt.Println("任务执行完成") }

package main import ( "fmt" "log" "time" "github.com/hashicorp/consul/api" ) func main() { config := api.DefaultConfig() config.Address = "localhost:8500" client, err := api.NewClient(config) if err != nil { log.Fatal(err) } // 服务注册 registration := &api.AgentServiceRegistration{ ID: "my-service", Name: "my-service", Port: 8080, Tags: []string{"web", "api"}, Check: &api.AgentServiceCheck{ HTTP: "http://localhost:8080/health", Timeout: "3s", Interval: "10s", DeregisterCriticalServiceAfter: "1m", }, } err = client.Agent().ServiceRegister(registration) if err != nil { log.Fatal(err) } // 服务发现 ticker := time.NewTicker(10 * time.Second) for range ticker.C { services, _, err := client.Catalog().Service("my-service", "", nil) if err != nil { log.Fatal(err) } for _, service := range services { fmt.Printf("Discovered service: %s ", service.ServiceAddress) } } }

package main import ( "fmt" "gorm.io/driver/mysql" "gorm.io/gorm" ) type User struct { ID uint `gorm:"primaryKey"` Name string `gorm:"column:name"` Age uint `gorm:"column:age"` } func main() { dsn := "user:password@tcp(localhost:3306)/database" db, err := gorm.Open(mysql.Open(dsn), &gorm.Config{}) if err != nil { fmt.Println(err) } // 创建表 err = db.AutoMigrate(&User{}) if err != nil { fmt.Println(err) } // 插入数据 user := User{Name: "Alice", Age: 20} result := db.Create(&user) if result.Error != nil { fmt.Println(result.Error) } // 查询数据 var users []User db.Find(&users) for _, user := range users { fmt.Printf("ID: %d, Name: %s, Age: %d ", user.ID, user.Name, user.Age) } }