<?php

function redisClient(): Redis
{
    static $redis = null;
    if ($redis === null) {
        $config = require __DIR__ . '/../config/config.php';
        $redis  = new Redis();
        if (!@$redis->connect($config['redis']['host'], $config['redis']['port'])) {
            throw new RuntimeException('Redis connection failed.');
        }
    }
    return $redis;
}