file/app/Providers/SettingServiceProvider.php

<?php

namespace App\Providers;

use Illuminate\Support\ServiceProvider;

class SettingServiceProvider extends ServiceProvider
{
    /**
     * Register services.
     *
     * @return void
     */
    public function register()
    {

    }

    /**
     * Bootstrap services.
     *
     * @return void
     */
    public function boot()
    {
        $this->app->bind('settings', function(){
            // todo: get settings from shared database
            return ['real'];
        });
    }
}