How to allow newly registered members to be automatically assigned customer service?

Every time you register a new member, a customer service representative will be automatically assigned

There are 3 customer service staff in total (more customer service will be added in the future). How to deal with it?
The first new member, customer service 1
The second new member, customer service 2
The third new member, customer service 3
The fourth new member, customer service 1
...

I first query all customer service in the customer service table, and then update the customer service field in the newly registered member table.
How to make one-to-one correspondence between them now?

Reply content:

Every time you register a new member, a customer service representative will be automatically assigned

There are 3 customer service staff in total (more customer service will be added in the future). How to deal with it?
The first new member, customer service 1
The second new member, customer service 2
The third new member, customer service 3
The fourth new member, customer service 1
...

I first query all customer service in the customer service table, and then update the customer service field in the newly registered member table.
How to make one-to-one correspondence between them now?

Excuse me, do you want to consider the idle status of customer service
For example, customer service a b c
At this time, 3 people came and divided it with a b c
At this time, c has already helped handle his own affairs
At this time, a fourth person came and divided it with who

If this situation does not exist

<code>$number = file_get_contents("log.txt");
file_put_contents("log.txt", ($number +1)%3);</code>

Let’s do it with redis.

Use the List structure, first build the customer service list, when a new user comes in, RPOP a customer service at the end of the team, and then LPUSH this customer service to the head of the team

When adding a new customer service, if you want the sequence of serial numbers to remain unchanged, for example, it is currently 2 3 1, and the list after the newly added 4 will become 2 3 4 1, then you need to remove the queue and make a logical judgment. If not needed, just LPUSH directly to the head of the queue.

If you don’t use redis, just write the file. Each customer uses "rn". The rules for separated retrieval are the same as above

Thanks for the invitation, I simply wrote a function. Is this what you want?

<code><?php

function distribution_cs($user_id,$cs_total=3){

    if($user_id%$cs_total==0){
        return $cs_total;
    }
    return $user_id%$cs_total;
}


echo distribution_cs(1).",";
echo distribution_cs(2).",";
echo distribution_cs(3).",";
echo distribution_cs(4).",";
echo distribution_cs(5).",";
echo distribution_cs(6).",";
echo distribution_cs(7).",";
echo distribution_cs(8).",";
echo distribution_cs(9).",";
echo distribution_cs(10).",";
echo distribution_cs(11).",";
echo distribution_cs(12).",";
echo distribution_cs(13).",";
echo distribution_cs(14,4).",";
echo distribution_cs(15,4).",";
echo distribution_cs(16,4).",";
echo distribution_cs(17,4).",";
echo distribution_cs(18,4).",";
echo distribution_cs(19,4).",";
echo distribution_cs(20,4).",";
echo distribution_cs(21,5).",";</code>

Output results

1,2,3,1,2,3,1,2,3,1,2,3,1,2,3,4,1,2,3,4,1,

<code><?php

class serviceFactory{
    private $num;
    private $count = 0;

    function __construct($num){
        $this->setNum($num);
    }

    function getService(){
        if($this->count >= $this->num){
            $this->count = 0;
        }
        $this->count ++;
        return $this->count;
    }

    function setNum($num){
        $this->num = $num;
    }

}

$factory = new serviceFactory(3);
echo $factory->getService(),",";
echo $factory->getService(),",";
echo $factory->getService(),",";
echo $factory->getService(),",";
echo $factory->getService(),",";
echo $factory->getService(),",";
echo $factory->getService(),",";
echo $factory->getService(),",";
echo $factory->getService(),",";
$factory->setNum(4);
echo $factory->getService(),",";
echo $factory->getService(),",";
echo $factory->getService(),",";
echo $factory->getService(),",";
echo $factory->getService(),",";</code>

A super simple hash algorithm is used, the number of customer service is n, the new registered user id is m, and then the assigned customer service is m % n + 1

I have written a similar one before, but it is not a customer service, so I won’t post the code here. I will talk about my personal approach:

The ultimate goal is to keep every customer service busy without keeping users waiting for a long time.

So, for a new user, assign him one:

<code>if ( 空闲状态的客服数 >= 0 ){
    // 分配给最先进入空闲状态的那个客服
}else{
    // 说明现在每个客服都有用户在咨询
    // 并且可能某些客服下还有在排队等待的用户
    获取每个客服 **当前咨询任务** 的开始时间
    
    将这个用户分配给 当前资讯任务 的开始时间最早的 并且 后面排队人数最少的哪个客服
    // 其实上面还有一个权重的问题，比如 A 客服 当前客户资讯任务开始时间比 B 早 2分钟，但是 A 后面排队的人数比 B 客服多 1个，这就要靠 权重值 来计算是分配给 A 还是 B。
}
</code>

Personally, I think you can assign virtual customer service At the same time, it is easy to make every customer service busy.

I am also new to this knowledge. Please correct me if my answer is not good. Thank you