public function getCache()
    {
        if (!$this->cache) {
            $this->cache = new CacheStorageHelper(
                CacheStorageHelper::ADAPTOR_DATABASE,
                'Health',
                $this->em->getConnection()
            );
        }

        return [
            'delays'     => $this->cache->get('delays'),
            'lastCached' => $this->cache->get('lastCached'),
        ];
    }