[11.x] Add maintenance mode on multiple servers (laravel#9568)

* Add maintenance mode on multiple servers

* formatting

---------

Co-authored-by: Taylor Otwell <[email protected]>

Author: emilklindt

configuration.md

@@ -301,6 +301,20 @@ When accessing this hidden route, you will then be redirected to the `/` route o
 > [!NOTE]  
 > Your maintenance mode secret should typically consist of alpha-numeric characters and, optionally, dashes. You should avoid using characters that have special meaning in URLs such as `?` or `&`.
 
+<a name="maintenance-mode-on-multiple-servers"></a>
+#### Maintenance Mode on Multiple Servers
+
+By default, Laravel determines if your application is in maintenance mode using a file-based system. This means to activate maintenance mode, the `php artisan down` command has to be executed on each server hosting your application.
+
+Alternatively, Laravel offers a cache-based method for handling maintenance mode. This method requires running the `php artisan down` command on just one server. To use this approach, modify the "driver" setting in the `config/app.php` file of your application to `cache`. Then, select a cache `store` that is accessible by all your servers. This ensures the maintenance mode status is consistently maintained across every server:
+
+```php
+'maintenance' => [
+    'driver' => 'cache',
+    'store' => 'database',
+],
+```
+
 <a name="pre-rendering-the-maintenance-mode-view"></a>
 #### Pre-Rendering the Maintenance Mode View