Allow storage to be wiped after a render of data in metrics controller

config/config.php

@@ -35,4 +35,9 @@
      * You can change the Middleware which is used for the IP whitelisting.  You can add your own, like a token based authentication.
      */
     "middleware" => \LKDevelopment\HorizonPrometheusExporter\Http\Middleware\IPWhitelistingMiddleware::class,
+
+    /**
+     * Allow storage to be wiped after a render of data in metrics controller
+     */
+    "wipe_storage_after_render" => false,
 ];

src/Http/Controller/HorizonPrometheusExporterController.php

@@ -17,6 +17,10 @@ public function metrics()
         $renderer = new RenderTextFormat();
         $result = $renderer->render(ExporterRepository::getRegistry()->getMetricFamilySamples());
 
+        if(config('horizon-exporter.wipe_storage_after_render', false)) {
+            ExporterRepository::getRegistry()->wipeStorage();
+        }
+
         return new Response($result, Response::HTTP_OK, ["Content-Type" => RenderTextFormat::MIME_TYPE]);
     }
 }