getRedis example

if (!$address) {
                        throw new InvalidArgumentException(sprintf('Failed to retrieve master information from sentinel "%s".', $sentinelMaster), previous: $redisException ?? null);
                    }
                }

                return self::initializeRedis($redis ?? (\extension_loaded('redis') ? new \Redis() : new Relay()), $host, $port, $auth, $options);
            };
        }

        if (!$options['lazy']) {
            $this->getRedis();
        }

        foreach (['stream', 'group', 'consumer'] as $key) {
            if ('' === $options[$key]) {
                throw new InvalidArgumentException(sprintf('"%s" should be configured, got an empty string.', $key));
            }
        }

        $this->stream = $options['stream'];
        $this->group = $options['group'];
        $this->consumer = $options['consumer'];
        

if ($backendCache instanceof Zend_Cache_Backend_Apcu) {
            $info = [];
            $apcInfo = apcu_cache_info('user');
            $info['files'] = $apcInfo['num_entries'];
            $info['size'] = $this->encodeSize($apcInfo['mem_size']);
            $apcInfo = apcu_sma_info();
            $info['freeSpace'] = $this->encodeSize($apcInfo['avail_mem']);
        } elseif ($backendCache instanceof Zend_Cache_Backend_Redis) {
            $info = [];

            /** @var Redis $redis */
            $redis = $backendCache->getRedis();
            $info['files'] = $redis->dbSize();
            $info['size'] = $this->encodeSize($redis->info()['used_memory']);
        } else {
            $dir = null;

            if (!empty($this->cacheConfig['backendOptions']['cache_dir'])) {
                $dir = $this->cacheConfig['backendOptions']['cache_dir'];
            } elseif (!empty($this->cacheConfig['backendOptions']['slow_backend_options']['cache_dir'])) {
                $dir = $this->cacheConfig['backendOptions']['slow_backend_options']['cache_dir'];
            }
            $info = $this->getDirectoryInfo($dir);
        }