fix: harden concurrent quota and status updates

model/user.go

@@ -547,7 +547,7 @@ func inviteUser(inviterId int) error {
 func (user *User) TransferAffQuotaToQuota(quota int) error {
 	// 检查quota是否小于最小额度
 	if float64(quota) < common.QuotaPerUnit {
-		return fmt.Errorf("转移额度最小为%s！", logger.LogQuota(int(common.QuotaPerUnit)))
+		return fmt.Errorf("转移额度最小为%s！", logger.LogQuota(common.QuotaFromFloat(common.QuotaPerUnit)))
 	}
 
 	// 开始数据库事务
@@ -1180,24 +1180,9 @@ func ValidateAccessToken(token string) (*User, error) {
 
 // GetUserQuota gets quota from Redis first, falls back to DB if needed
 func GetUserQuota(id int, fromDB bool) (quota int, err error) {
-	defer func() {
-		// Update Redis cache asynchronously on successful DB read
-		if shouldUpdateRedis(fromDB, err) {
-			gopool.Go(func() {
-				if err := updateUserQuotaCache(id, quota); err != nil {
-					common.SysLog("failed to update user quota cache: " + err.Error())
-				}
-			})
-		}
-	}()
 	if !fromDB && common.RedisEnabled {
-		quota, err := getUserQuotaCache(id)
-		if err == nil {
-			return quota, nil
-		}
-		// Don't return error - fall through to DB
+		return getUserQuotaCache(id)
 	}
-	fromDB = true
 	err = DB.Model(&User{}).Where("id = ?", id).Select("quota").Find(&quota).Error
 	if err != nil {
 		return 0, err
@@ -1403,24 +1388,6 @@ func updateUserQuotaUsedQuotaAndRequestCount(id int, quota int, usedQuota int, r
 	}
 }
 
-func updateUserUsedQuota(id int, quota int) {
-	err := DB.Model(&User{}).Where("id = ?", id).Updates(
-		map[string]interface{}{
-			"used_quota": gorm.Expr("used_quota + ?", quota),
-		},
-	).Error
-	if err != nil {
-		common.SysLog("failed to update user used quota: " + err.Error())
-	}
-}
-
-func updateUserRequestCount(id int, count int) {
-	err := DB.Model(&User{}).Where("id = ?", id).Update("request_count", gorm.Expr("request_count + ?", count)).Error
-	if err != nil {
-		common.SysLog("failed to update user request count: " + err.Error())
-	}
-}
-
 // GetUsernameById gets username from Redis first, falls back to DB if needed
 func GetUsernameById(id int, fromDB bool) (username string, err error) {
 	defer func() {