code: public function save($datas, array $identifier = array(), $shardingKey = null, &$affectedRows = null)
      {
          $this->getConnection()->delete($this->getCacheKey($identifier));
      }
docs: @param array $datas
  @param array $identifier
  @param null  $shardingKey
  @param null  $affectedRows
  
  @throws \Exception