Knockout-Lite/app/Knockout/UserBan.php

<?php

namespace App\Knockout;

use Illuminate\Support\Facades\Cache;

class UserBan {

    private static function requestAll(int $userId): Dataset
    {
        $data = (new AbstractData)->httpGet(sprintf('/user/%u/bans', $userId));
        $json = json_decode($data);
        $records = array_map(function($user) {
            return Ban::unwrap($user);
        }, $json);
        return (new Dataset($records));
    }

    public static function updateAll(int $userId): Dataset
    {
        $key = sprintf('user-bans-%u', $userId);
        $data = self::requestAll($userId);
        Cache::put($key, $data, 300);
        return $data;
    }

    public static function all(int $userId): Dataset
    {
        $key = sprintf('user-bans-%u', $userId);
        return Cache::get($key, function() use($userId) {
            return self::updateAll($userId);
        });
    }

}