Used to store php sessions radishes.
The mechanism locks: one is the process of working with the session, the second process is waiting.
composer require dmitry-suffi/redis-session-handler
$redis = new Redis();
if ($redis->connect('11.111.111.11', 6379) && $redis->select(0)) {
$handler = new \suffi\RedisSessionHandler\RedisSessionHandler($redis);
session_set_save_handler($handler);
}
session_start();