diff --git a/pkg/common/constant/errors.go b/pkg/common/constant/errors.go
index f59216967..6bf324906 100644
--- a/pkg/common/constant/errors.go
+++ b/pkg/common/constant/errors.go
@@ -14,7 +14,6 @@ var (
 	ErrUserIDNotFound  = &ErrInfo{UserIDNotFoundError, "UserIDNotFoundError", ""}
 	ErrGroupIDNotFound = &ErrInfo{GroupIDNotFoundError, "GroupIDNotFoundError", ""}
 	ErrGroupIDExisted  = &ErrInfo{GroupIDNotFoundError, "GroupIDExisted", ""} // todo group id 已存在
-	ErrGroupIDExisted  = &ErrInfo{GroupIDNotFoundError, "GroupIDExisted", ""} // todo group id 已存在
 
 	ErrRecordNotFound = &ErrInfo{RecordNotFoundError, "RecordNotFoundError", ""}
 
@@ -57,11 +56,8 @@ var (
 
 	ErrConnOverMaxNumLimit = &ErrInfo{ConnOverMaxNumLimit, "ConnOverMaxNumLimit", ""}
 
-	ErrConnOverMaxNumLimit = &ErrInfo{ConnOverMaxNumLimit, "ConnOverMaxNumLimit", ""}
-
-	ErrConnOverMaxNumLimit = &ErrInfo{ConnOverMaxNumLimit, "ConnOverMaxNumLimit", ""}
-	ErrConnArgsErr         = &ErrInfo{ConnArgsErr, "args err, need token, sendID, platformID", ""}
-	ErrConnUpdateErr       = &ErrInfo{ConnArgsErr, "upgrade http conn err", ""}
+	ErrConnArgsErr   = &ErrInfo{ConnArgsErr, "args err, need token, sendID, platformID", ""}
+	ErrConnUpdateErr = &ErrInfo{ConnArgsErr, "upgrade http conn err", ""}
 )
 
 const (
diff --git a/pkg/common/db/table/unrelation/super_group.go b/pkg/common/db/table/unrelation/super_group.go
index 6f4409f64..115d368b1 100644
--- a/pkg/common/db/table/unrelation/super_group.go
+++ b/pkg/common/db/table/unrelation/super_group.go
@@ -2,7 +2,6 @@ package unrelation
 
 import (
 	"context"
-	"strconv"
 )
 
 const (
diff --git a/pkg/discoveryregistry/startegy.go b/pkg/discoveryregistry/startegy.go
index 79bde210e..f54d7d80d 100644
--- a/pkg/discoveryregistry/startegy.go
+++ b/pkg/discoveryregistry/startegy.go
@@ -14,15 +14,3 @@ func (r *Robin) Robin(slice []*grpc.ClientConn) int {
 	}
 	return index
 }
-
-type Hash struct {
-}
-
-func (r *Hash) Hash(slice []*grpc.ClientConn) int {
-	index := r.next
-	r.next += 1
-	if r.next > len(slice)-1 {
-		r.next = 0
-	}
-	return index
-}