public function set($key, $value)
    {
        $this->memcached->set($key, $value, $this->ttl);
        return;
    }
public function set($key, $value)
    {
        $this->memcached->set($key, $value, $this->ttl);
        return;
    }
set

@param string $key
@param mixed $value
@return void