memcache.go
func (c *Client) Get(key string) (*Item, error) {
	cn, err := c.sendCommand(key, cmdGet, nil, 0, nil)
	if err != nil {
		return nil, err
	}
	return c.parseItemResponse(key, cn, true)
}
func (c *Client) Get(key string) (*Item, error) {
	cn, err := c.sendCommand(key, cmdGet, nil, 0, nil)
	if err != nil {
		return nil, err
	}
	return c.parseItemResponse(key, cn, true)
}
// Get gets the item for the given key. ErrCacheMiss is returned for a
// memcache cache miss. The key must be at most 250 bytes in length.