diff --git a/registry/directory/directory.go b/registry/directory/directory.go
index 11687f82ee5fe0dba6f2bca38b6454ee9c666d91..0ef5023c619d27cc4dc1daf5129be0186b90e903 100644
--- a/registry/directory/directory.go
+++ b/registry/directory/directory.go
@@ -55,7 +55,6 @@ type registryDirectory struct {
 	serviceType      string
 	registry         registry.Registry
 	cacheInvokersMap *sync.Map //use sync.map
-	//cacheInvokersMap map[string]protocol.Invoker
 	Options
 }
 
@@ -80,7 +79,7 @@ func NewRegistryDirectory(url *common.URL, registry registry.Registry, opts ...O
 	}, nil
 }
 
-//subscibe from registry
+//subscribe from registry
 func (dir *registryDirectory) Subscribe(url common.URL) {
 	for {
 		if !dir.registry.IsAvailable() {
@@ -115,16 +114,13 @@ func (dir *registryDirectory) Subscribe(url common.URL) {
 	}
 }
 
-//subscribe service from registry , and update the cacheServices
+//subscribe service from registry, and update the cacheServices
 func (dir *registryDirectory) update(res *registry.ServiceEvent) {
 	if res == nil {
 		return
 	}
-
 	logger.Debugf("registry update, result{%s}", res)
-
 	logger.Debugf("update service name: %s!", res.Service)
-
 	dir.refreshInvokers(res)
 }
 
@@ -150,7 +146,6 @@ func (dir *registryDirectory) refreshInvokers(res *registry.ServiceEvent) {
 }
 
 func (dir *registryDirectory) toGroupInvokers() []protocol.Invoker {
-
 	newInvokersList := []protocol.Invoker{}
 	groupInvokersMap := make(map[string][]protocol.Invoker)
 	groupInvokersList := []protocol.Invoker{}