src/LinguaLeo/Cache/Provider/MemCache.php
public function add($key, $data, $ttl = 0)
    {
        return $this->memcached->add($key, $data, $ttl);
    }
public function add($key, $data, $ttl = 0)
    {
        return $this->memcached->add($key, $data, $ttl);
    }
{@inheritdoc}