einundzwanzig-app/app/Providers/AppServiceProvider.php

<?php

namespace App\Providers;

use App\Support\Carbon;
use Illuminate\Cache\RateLimiting\Limit;
use Illuminate\Contracts\Auth\Authenticatable;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Foundation\Events\DiagnosingHealth;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Date;
use Illuminate\Support\Facades\Event;
use Illuminate\Support\Facades\Gate;
use Illuminate\Support\Facades\RateLimiter;
use Illuminate\Support\Facades\Route;
use Illuminate\Support\Facades\URL;
use Illuminate\Support\ServiceProvider;
use Laravel\Nightwatch\Facades\Nightwatch;
use Laravel\Nightwatch\Http\Middleware\Sample;
use Livewire\Livewire;

class AppServiceProvider extends ServiceProvider
{
    /**
     * Register any application services.
     */
    public function register(): void
    {
        Date::use(
            Carbon::class
        );
    }

    /**
     * Bootstrap any application services.
     */
    public function boot(): void
    {
        $this->configureRateLimiting();

        Gate::define('viewApiDocs', fn (?Authenticatable $user = null): bool => true);

        if ($this->app->environment('production')) {
            URL::forceScheme('https');
        }

        Livewire::setUpdateRoute(function ($handle) {
            return Route::post('/livewire/update', $handle)
                ->middleware(['web', 'throttle:livewire', Sample::rate(0)]);
        });

        Nightwatch::user(fn (Authenticatable $user) => [
            'name' => $user->name,
        ]);

        Event::listen(function (DiagnosingHealth $event) {
            Nightwatch::dontSample();
        });

        Model::preventLazyLoading(app()->environment('local'));
    }

    /**
     * Configure the rate limiters for the application.
     */
    protected function configureRateLimiting(): void
    {
        RateLimiter::for('calendar', function (Request $request) {
            return Limit::perMinute(60)->by($request->ip());
        });

        // Generous backstop for the shared `/livewire/update` endpoint. A single
        // active user stays far below this: the only sustained generator is the
        // login page's `wire:poll.4s` at ~15 req/min, plus interaction bursts.
        // 120/min leaves headroom for several users behind one NAT while still
        // capping abusive replay/scan traffic. Keyed by the real client IP
        // (trustProxies('*') resolves X-Forwarded-For).
        RateLimiter::for('livewire', function (Request $request) {
            return Limit::perMinute(120)->by($request->ip());
        });
    }
}