confirms/app/Config/Session.php

<?php

namespace Config;

use CodeIgniter\Config\BaseConfig;
use CodeIgniter\Session\Handlers\BaseHandler;
use CodeIgniter\Session\Handlers\FileHandler;
use CodeIgniter\Session\Handlers\RedisHandler;

class Session extends BaseConfig
{
    /**
     * --------------------------------------------------------------------------
     * Session Driver
     * --------------------------------------------------------------------------
     *
     * The session storage driver to use:
     * - `CodeIgniter\Session\Handlers\FileHandler`
     * - `CodeIgniter\Session\Handlers\DatabaseHandler`
     * - `CodeIgniter\Session\Handlers\MemcachedHandler`
     * - `CodeIgniter\Session\Handlers\RedisHandler`
     *
     * @var class-string<BaseHandler>
     */
    // public string $driver = FileHandler::class;
    public string $driver = RedisHandler::class;

    /**
     * --------------------------------------------------------------------------
     * Session Cookie Name
     * --------------------------------------------------------------------------
     *
     * The session cookie name, must contain only [0-9a-z_-] characters
     */
    public string $cookieName = 'ci_session';

    /**
     * --------------------------------------------------------------------------
     * Session Expiration
     * --------------------------------------------------------------------------
     *
     * The number of SECONDS you want the session to last.
     * Setting to 0 (zero) means expire when the browser is closed.
     */
    public int $expiration = 7200;

    /**
     * --------------------------------------------------------------------------
     * Session Save Path
     * --------------------------------------------------------------------------
     *
     * The location to save sessions to and is driver dependent.
     *
     * For the 'files' driver, it's a path to a writable directory.
     * WARNING: Only absolute paths are supported!
     *
     * For the 'database' driver, it's a table name.
     * Please read up the manual for the format with other session drivers.
     *
     * IMPORTANT: You are REQUIRED to set a valid save path!
     * 
     * For Redis: tcp://host:port?database=n&password=xxx
     */
    // public string $savePath = WRITEPATH . 'session';
    public string $savePath;

    public function __construct()
    {
        parent::__construct();

        // Redis 설정을 환경변수에서 불러오기
        if ($this->driver === RedisHandler::class) {
            // .env의 redis.default.* 설정을 underscore로 읽기
            $redisHost = env('redis_default_host', '127.0.0.1');
            $redisPort = env('redis_default_port', '6379');
            $redisDatabase = env('SESSION_REDIS_DATABASE', '0');
            $redisPassword = env('redis_default_password', '');

            $this->savePath = sprintf(
                'tcp://%s:%s?database=%s',
                $redisHost,
                $redisPort,
                $redisDatabase
            );

            if (!empty($redisPassword)) {
                $this->savePath .= '&password=' . $redisPassword;
            }
        } else {
            $this->savePath = WRITEPATH . 'session';
        }
    }

    /**
     * --------------------------------------------------------------------------
     * Session Match IP
     * --------------------------------------------------------------------------
     *
     * Whether to match the user's IP address when reading the session data.
     *
     * WARNING: If you're using the database driver, don't forget to update
     *          your session table's PRIMARY KEY when changing this setting.
     */
    public bool $matchIP = false;

    /**
     * --------------------------------------------------------------------------
     * Session Time to Update
     * --------------------------------------------------------------------------
     *
     * How many seconds between CI regenerating the session ID.
     */
    public int $timeToUpdate = 300;

    /**
     * --------------------------------------------------------------------------
     * Session Regenerate Destroy
     * --------------------------------------------------------------------------
     *
     * Whether to destroy session data associated with the old session ID
     * when auto-regenerating the session ID. When set to FALSE, the data
     * will be later deleted by the garbage collector.
     */
    public bool $regenerateDestroy = false;

    /**
     * --------------------------------------------------------------------------
     * Session Database Group
     * --------------------------------------------------------------------------
     *
     * DB Group for the database session.
     */
    public ?string $DBGroup = null;

    /**
     * --------------------------------------------------------------------------
     * Lock Retry Interval (microseconds)
     * --------------------------------------------------------------------------
     *
     * This is used for RedisHandler.
     *
     * Time (microseconds) to wait if lock cannot be acquired.
     * The default is 100,000 microseconds (= 0.1 seconds).
     */
    public int $lockRetryInterval = 100_000;

    /**
     * --------------------------------------------------------------------------
     * Lock Max Retries
     * --------------------------------------------------------------------------
     *
     * This is used for RedisHandler.
     *
     * Maximum number of lock acquisition attempts.
     * The default is 300 times. That is lock timeout is about 30 (0.1 * 300)
     * seconds.
     */
    public int $lockMaxRetries = 300;
}