public function deleteMulti(array $keys): void
    {
        if ($this->enabled === false) {
            return;
        }

        foreach ($keys as $index) {
            if ($key = $this->cacheIndex[$index] ?? null) {
                unset($this->cacheIndex[$index]);
            } else {
                $key = $index;
            }

            unset($this->cache[$key], $this->cacheExpiryTime[$key], $this->cacheAccessCount[$key]);
        }
    }