修复余额与套餐用量并发更新可能导致数据错误的问题

web/services/resource.go

@@ -2,6 +2,7 @@ package services
 
 import (
 	"context"
+	"database/sql"
 	"encoding/json"
 	"fmt"
 	"platform/pkg/rds"
@@ -162,13 +163,13 @@ func (s *resourceService) CreateResource(data *CreateResourceData, uid int32) er
 		// 更新用户余额
 		_, err = q.User.
 			Where(q.User.ID.Eq(uid)).
-			Update(q.User.Balance, user.Balance-amount)
+			UpdateSimple(q.User.Balance.Sub(amount))
 		if err != nil {
 			return err
 		}
 
 		return nil
-	})
+	}, &sql.TxOptions{Isolation: sql.LevelRepeatableRead})
 	if err != nil {
 		return err
 	}