Feat: batch download in streamming paradism

Fix: add cache-controler header in API call responses

models/user.go

@@ -3,6 +3,7 @@ package model
 import (
 	"crypto/md5"
 	"crypto/sha1"
+	"encoding/gob"
 	"encoding/hex"
 	"encoding/json"
 	"strings"
@@ -46,6 +47,10 @@ type User struct {
 	OptionsSerialized UserOption `gorm:"-"`
 }
 
+func init() {
+	gob.Register(User{})
+}
+
 // UserOption 用户个性化配置字段
 type UserOption struct {
 	ProfileOff     bool   `json:"profile_off,omitempty"`