思路
用户请求限限流（同接口访问时间限制）
> redis key 接品名+ user_id 每访问一次+1 过期时间为限制访问时间
_user_id = (int)$params['user_id'];
$this->_search_key = $params['apiName'].$this->_prefix;
$this->_key = $this->_search_key.$params['user_id'];
$this->_expireat_time = 60;##配置项
$this->_user_max_limit = 100;##配置项
$this->_max_limit = 100;##配置项
}
/**
* [userLimit 是否达到单用户接口请求峰值]
* @Author Jerry (wx621201)
* @DateTime 2019-08-02T15:35:52+0800
* @Example eg:
* @return [type] [description]
*/
public function checkUserLimit(){
if($this->_user_max_limit==0) return true;//0不限流，不存在防刷,可以购买
##如果不存在，说明超过一分钟，给SQL拦截
$matchNum = $this->_exists();
$matchNum = (int)$matchNum?$matchNum:0;
if($matchNum>$this->_user_max_limit) return false;##达到限流条件
$this->_set($matchNum+1);
return true;##默认通过
}
/**
* [countLimit 是否达到用户限流数]
* @Author Jerry (c84133883)
* @DateTime 2019-08-05T10:26:39+0800
* @Example eg:
* @return [type] [description]
*/
public function checkCountLimit(){
if($this->_max_limit==0) return true;//0不限流
if($this->_userCount>$this->_max_limit){
return false;
}else{
return true;
}
}
/**
* [_userCount 总用户数]
* @Author Jerry (wx621201)
* @DateTime 2019-08-02T15:41:08+0800
* @Example eg:
* @return [type] [description]
*/
private function _userCount(){
$list = redis::scene($this->_scene)->keys($this->_search_key.'*');
return count($list);
}
/**
* [_set description]
* @Author Jerry (wx621201)
* @DateTime 2019-08-02T15:45:51+0800
* @Example eg:
* @param [type] $key [description]
* @param [type] $value [description]
* @param integer $time [description]
* @param string $scene [description]
*/
private function _set($value){
redis::scene($this->_scene)->set($this->_key,$value);
##处理过期时间
$expiretime = time()+(float)$this->_expireat_time;##1分钟
redis::scene($this->_scene)->expireat($this->_key,$expiretime);
return ture;
}
/**
* [_exists 检查是否存在]
* @Author Jerry (wx621201)
* @DateTime 2019-08-02T15:45:54+0800
* @Example eg:
* @param [type] $key [description]
* @param string $scene [description]
* @return [type] [description]
*/
private function _exists(){
if(!redis::scene($this->_scene)->exists($this->_key)||!redis::scene($this->_scene)->get($this->_key)){
return false;
}
return redis::scene($this->_scene)->get($this->_key);
}
}