如何在 Laravel 中在一秒钟内发出并发请求时避免重复记录

Posted 2023-03-24

【中文标题】如何在 Laravel 中在一秒钟内发出并发请求时避免重复记录

【英文标题】：How to avoid duplicated records when concurrent requests make within a second in Laravel

【发布时间】：2017-03-07 08:49:58

【问题描述】：

请帮我找出问题。

有时（并非总是）我的以下代码会在 DB 中插入两条记录（到用户表和配置文件表中），但我在插入“mobile_no”之前检查是否已经存在以制作基于唯一手机号码记录。

 static function postData($data)  

    try 
if (isset($data['number'])) 
    //exist
    $exist = Profile::where('mobile_no', '=', $data['number'])->get(); 
   //print_r($exist);

    if (count($exist) > 0 )        
    $user = User::find($exist[0]['user_id']);
    if (isset($data['last_name'])) 
    $user->first_name = $data['first_name'];
    
    if (isset($data['last_name'])) 
    $user->last_name = $data['last_name'];
    
     if (isset($data['email'])) 
    $user->email = $data['email'];
    
    $user->save();
    $proid = $exist[0]['user_id'];
    $profile_result = Profile::find($proid);


    if (isset($data['number'])) 
    $profile_result->mobile_no = $data['number'];
    
     if (isset($data['birthday'])) 
    $profile_result->dob = $data['birthday'];
    



    $profile_result->save();
    return $exist[0]['user_id'];
    else

    $user = new User();
    if (isset($data['first_name'])) 
    $user->first_name = $data['first_name'];
    
    if (isset($data['last_name'])) 
    $user->last_name = $data['last_name'];
    


    $user->save();
    $id = $user->id;
    $profile = new Profile();

    $profile->user_id = $id;

    if (isset($data['mobile_number'])) 
    $profile->mobile_no = $data['number'];
    
    if (isset($data['birthday'])) 
    $profile->dob = $data['birthday'];
    
    $profile->save();

    $proid = $profile->user_id;
    $profile_result = $profile::where('user_id', '=', $proid)->get();

    $user_result = $user::where('id', '=', $id)->get();

    $output = array();




    return (string) $id;
    
    

     catch (Exception $ex) 
    
    return $ex;
    


    

【参考方案1】：

对数据库使用索引UNIQUE，它将为您处理。请记住在尝试插入重复键时正确处理错误。