php_laravel_laracasts/routes/web.php

<?php

/*
|--------------------------------------------------------------------------
| Web Routes
|--------------------------------------------------------------------------
|
| Here is where you can register web routes for your application. These
| routes are loaded by the RouteServiceProvider within a group which
| contains the "web" middleware group. Now create something great!
|
*/

$this->get('/', function (Illuminate\Contracts\Cache\Factory $cache) {
    /** @var \Illuminate\Contracts\Cache\Store $store */
    $store = $cache->store();
    $cid = 'some cid';
    $store->put($cid, 'value', 10);
    $v = $store->get($cid);
    return $v;
});