diff --git a/sra/es.go b/sra/es.go
deleted file mode 100644
index db76aa1..0000000
--- a/sra/es.go
+++ /dev/null
@@ -1,13 +0,0 @@
-package sra
-
-import (
-	"github.com/elastic/go-elasticsearch/v7/estransport"
-	"github.com/go-kratos/kratos/v2/errors"
-)
-
-type EsSelector struct {
-}
-
-func (s *EsSelector) Select([]*estransport.Connection) (*estransport.Connection, error) {
-	return nil, errors.ServiceUnavailable("Unavailable", "not impl")
-}
diff --git a/sra/gorm.go b/sra/gorm.go
deleted file mode 100644
index 517fe96..0000000
--- a/sra/gorm.go
+++ /dev/null
@@ -1 +0,0 @@
-package sra
diff --git a/sra/redis.go b/sra/redis.go
deleted file mode 100644
index 79121d7..0000000
--- a/sra/redis.go
+++ /dev/null
@@ -1,16 +0,0 @@
-package sra
-
-type RedisLimiter struct {
-}
-
-func NewRedisLimiter() *RedisLimiter {
-	return NewRedisLimiter()
-}
-
-func (l *RedisLimiter) Allow() error {
-	return nil
-}
-
-func (l *RedisLimiter) ReportResult(result error) {
-	return
-}