feat: prevent using horizon redis connection name

src/Horizon.php

@@ -6,6 +6,7 @@
 use Exception;
 use Illuminate\Support\HtmlString;
 use Illuminate\Support\Js;
+use InvalidArgumentException;
 use RuntimeException;
 
 class Horizon
@@ -90,6 +91,23 @@ public static function auth(Closure $callback)
         return new static;
     }
 
+    /**
+     * Check if a given Redis connection name is reserved by Horizon.
+     *
+     * @param  string  $connection
+     * @return void
+     *
+     * @throws \Exception
+     */
+    public static function checkReservedConnectionName(string $connection): void
+    {
+        if ($connection === 'horizon' || config()->has('database.redis.horizon')) {
+            throw new InvalidArgumentException(
+                'The Redis connection name [horizon] is reserved for internal use.'
+            );
+        }
+    }
+
     /**
      * Configure the Redis databases that will store Horizon data.
      *

src/HorizonServiceProvider.php

@@ -159,6 +159,8 @@ protected function configure()
             __DIR__.'/../config/horizon.php', 'horizon'
         );
 
+        Horizon::checkReservedConnectionName(config('horizon.use', 'default'));
+
         Horizon::use(config('horizon.use', 'default'));
     }