public function set($key, $value)
    {
        return $this->memcache->set($key, $value, 0, $this->lifetime);
    }
public function set($key, $value)
    {
        return $this->memcache->set($key, $value, 0, $this->lifetime);
    }
public function set ( $ key , $ value ) { return $ this -> memcache -> set ( $ key , $ value , 0 , $ this -> lifetime ) ; }
adds a cache key for a specific lifetime into the cache

@param string $key
@param mixed  $value

@return bool
adds a cache key for a specific lifetime into the cache