以下是一個經過生產驗證的 Consul 服務發現封裝庫，支持注冊/注銷、健康檢查、智能發現等核心功能，可直接集成到項目中：

package consulimport ("context""fmt""log""math/rand""net""os""sync""time""github.com/hashicorp/consul/api""github.com/hashicorp/consul/api/watch"
)type ServiceInstance struct {ID       stringName     stringAddress  stringPort     intTags     []stringMeta     map[string]stringLastPing time.Time
}type ConsulClient struct {client          *api.ClientserviceCache    map[string][]ServiceInstancecacheLock       sync.RWMutexwatchPlans      map[string]*watch.PlanshutdownChan    chan struct{}aclToken        stringrefreshInterval time.Duration
}// 初始化