opensourcepos/app/Config/OSPOS.php

<?php

namespace Config;

use App\Models\Appconfig;
use CodeIgniter\Cache\CacheInterface;
use CodeIgniter\Config\BaseConfig;

/**
 * This class holds the configuration options stored from the database so that on launch those settings can be cached
 * once in memory.  The settings are referenced frequently, so there is a significant performance hit to not storing
 * them.
 */
class OSPOS extends BaseConfig
{
    public array $settings;
    public string $commit_sha1 = 'dev';    //TODO: Travis scripts need to be updated to replace this with the commit hash on build
    private CacheInterface $cache;

    public function __construct()
    {
        parent::__construct();
        $this->cache = Services::cache();
        $this->set_settings();
    }

    /**
     * @return void
     */
    public function set_settings(): void
    {
        $cache = $this->cache->get('settings');

        if($cache)
        {
            $this->settings = decode_array($cache);
        }
        else
        {
            $appconfig = model(Appconfig::class);
            foreach($appconfig->get_all()->getResult() as $app_config)
            {
                $this->settings[$app_config->key] = $app_config->value;
            }
            $this->cache->save('settings', encode_array($this->settings));
        }
    }

    /**
     * @return void
     */
    public function update_settings(): void
    {
        $this->cache->delete('settings');
        $this->set_settings();
    }
}