Knockout-Lite/app/Knockout/Subforum.php

<?php

namespace App\Knockout;

use Illuminate\Support\Facades\Cache;

class Subforum {

    private static function unwrap($subforum)
    {
        $s = new self();

        $s->id              = $subforum->id;
        $s->name            = $subforum->name;
        $s->description     = $subforum->description;

        return $s;
    }

    public static function getAll()
    {
        $data = (new AbstractData)->httpGet('/subforum');
        $json = json_decode($data);
        return array_map(function($subforum) {
            return self::unwrap($subforum);
        }, $json->list);
    }

    public static function updateCache()
    {
        Cache::forever('subforums', self::getAll());
    }

    public static function getCache()
    {
        return Cache::get('subforums', []);
    }

}