webman-exercise/app/controller/Index.php

<?php

namespace app\controller;

use support\Request;
use support\Redis;
use support\Cache;

class Index
{
    public function index(Request $request)
    {
        return response('hello webman');
    }

    public function view(Request $request)
    {
        return view('index/view', ['name' => 'webman']);
    }

    public function json(Request $request)
    {
        Redis::set('good', 'well');

        // another way
        $r = Redis::connection('cache');
        $r->set('good', 'cache');

        // cache
        Cache::set('cache', 123);
        return json(['code' => 0, 'msg' => 'ok']);
    }

}