diff --git a/weed/iam/postgres_store.go b/weed/iam/postgres_store.go
new file mode 100644
index 000000000..793260627
--- /dev/null
+++ b/weed/iam/postgres_store.go
@@ -0,0 +1,53 @@
+package iam
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/seaweedfs/seaweedfs/weed/iam/policy"
+	"github.com/seaweedfs/seaweedfs/weed/pb/iam_pb"
+)
+
+type PostgresIamStorage struct {
+	// db *sql.DB
+}
+
+func NewPostgresIamStorage(config map[string]interface{}) (*PostgresIamStorage, error) {
+	return &PostgresIamStorage{}, nil
+}
+
+func (s *PostgresIamStorage) CreateIdentity(ctx context.Context, identity *iam_pb.Identity) error {
+	return fmt.Errorf("not implemented")
+}
+
+func (s *PostgresIamStorage) GetIdentity(ctx context.Context, name string) (*iam_pb.Identity, error) {
+	return nil, fmt.Errorf("not implemented")
+}
+
+func (s *PostgresIamStorage) UpdateIdentity(ctx context.Context, identity *iam_pb.Identity) error {
+	return fmt.Errorf("not implemented")
+}
+
+func (s *PostgresIamStorage) DeleteIdentity(ctx context.Context, name string) error {
+	return fmt.Errorf("not implemented")
+}
+
+func (s *PostgresIamStorage) ListIdentities(ctx context.Context, limit int, offset string) ([]*iam_pb.Identity, error) {
+	return nil, fmt.Errorf("not implemented")
+}
+
+func (s *PostgresIamStorage) CreatePolicy(ctx context.Context, name string, policy *policy.PolicyDocument) error {
+	return fmt.Errorf("not implemented")
+}
+
+func (s *PostgresIamStorage) GetPolicy(ctx context.Context, name string) (*policy.PolicyDocument, error) {
+	return nil, fmt.Errorf("not implemented")
+}
+
+func (s *PostgresIamStorage) DeletePolicy(ctx context.Context, name string) error {
+	return fmt.Errorf("not implemented")
+}
+
+func (s *PostgresIamStorage) ListPolicies(ctx context.Context, limit int, offset string) ([]string, error) {
+	return nil, fmt.Errorf("not implemented")
+}