protected function _master()
    {
        if (null === $this->_master) {
            $this->_master = $this->_connection($this->_config_master);
        }
        return $this->_master;
    }
protected function _master()
    {
        if (null === $this->_master) {
            $this->_master = $this->_connection($this->_config_master);
        }
        return $this->_master;
    }
protected function _master ( ) { if ( null === $ this -> _master ) { $ this -> _master = $ this -> _connection ( $ this -> _config_master ) ; } return $ this -> _master ; }
Get the master connection

@return \Redis
Get the master connection