Twig Cache taking 10s and stuck on Loop

Question

Something unusual happened with my site. I'm using slim 4.1. I have implemented twig view cache. Last night only with 50 active users the site went down. On checking logs I noticed it keeps on making the cache.

Upon checking with my infra team they said the fpm might got stuck because of repeitively creating the cache. But still the issue is unknown that why it happened. I am attaching the logs below. Can someone let me know if it is normal or what could be the cause.

Also a suggestion need. I was thinking to eliminate the cache from twig and cache it on server level via nginx. Wouldn't that be optimal ?

Not Found Handled code:

$app->group('', function(RouteCollectorProxy $group){
    $group->get('/{slug:.*}', function($request, $response, array $args) {
        $res = $request->getAttribute('data');
        if(isset($res)) {
            if($res['type'] == 'course') {
                $controllerClass = '\App\Controllers\Frontend\ControllerCommon';
                $method = 'viewPlayer';
            }
            else if($res['type'] == 'category') {
                $controllerClass = '\App\Controllers\Frontend\Controller'.$res['code'];
                if($res['parent_id'] == 0)
                    $method = 'viewParentCategory';
                else
                    $method = 'viewSingleCategory';
            }
            else {
                $controllerClass = '\App\Controllers\Frontend\Controller'.$res['code'];
                if(!empty($res['template'])){
                    $method = $res['template'];
                }
                else {
                    if($res['parent_id'] == 0)
                        $method = 'viewParentPage';
                    else
                        $method = 'viewSinglePage';
                }
            }
        }
        else {
            $controllerClass = '\App\Controllers\Frontend\ControllerCommon';
            $method = 'notFound';
        }

        $controller = new $controllerClass($this);
        return call_user_func_array([$controller, $method], func_get_args());
    });

My Index.php file

// Instantiate PHP-DI ContainerBuilder
$containerBuilder = new ContainerBuilder();

if (PRODUCTION) { // container compiled and cached
    $containerBuilder->enableCompilation(API_DIR . '/var/cache');
}

// Set up settings
$settings = require API_DIR . '/libs/settings.php';
$settings($containerBuilder);

// Set up dependencies
$dependencies = require API_DIR . '/libs/dependencies.php';
$dependencies($containerBuilder);

// Set up helper
$helper = require API_DIR . '/libs/Helper.php';

// Build PHP-DI Container instance
$container = $containerBuilder->build();

// Instantiate the app
AppFactory::setContainer($container);
$app = AppFactory::create();
$app->setBasePath(MAIN_DIR);
$callableResolver = $app->getCallableResolver();

// Create Twig
$twig = Twig::create(TEMPLATE_PATH, ['cache' => (PRODUCTION) ? API_DIR . '/var/cache' : false, 'debug' => true]);

// Add Assets Path
$loader = $twig->getLoader();
if ($loader instanceof FilesystemLoader) {
    $loader->addPath($container->get('settings')['assets']['path'], 'public');
}

// Add Asset Extensions
$environment = $twig->getEnvironment();
$twig->addExtension(new TwigAssetsExtension($environment, (array)$container->get('settings')['assets']));

// Add Twig-View Middleware
$app->add(TwigMiddleware::create($app, $twig));

// Register routes
// if (PRODUCTION) { // routes compiled and cached
//     $routeCollector = $app->getRouteCollector();
//     $routeCollector->setCacheFile(API_DIR . '/var/cache/routes.cache.php');
// }
$routes = require API_DIR . '/libs/routes.php';
$routes($app);

// Add Extensions
$twig->addExtension(new TwigExtension($app));

/** @var bool $displayErrorDetails */
$displayErrorDetails = $container->get('settings')['displayErrorDetails'];

// Create Request object from globals
$serverRequestCreator = ServerRequestCreatorFactory::create();
$request = $serverRequestCreator->createServerRequestFromGlobals();

// // Create Error Handler
$responseFactory = $app->getResponseFactory();
$errorHandler = new HttpErrorHandler($callableResolver, $responseFactory);

// Create Shutdown Handler
$shutdownHandler = new ShutdownHandler($request, $errorHandler, $displayErrorDetails);
register_shutdown_function($shutdownHandler);

// Add Routing Middleware
$app->addRoutingMiddleware();

// Add Error Middleware
$errorMiddleware = $app->addErrorMiddleware($displayErrorDetails, false, false);
$errorMiddleware->setDefaultErrorHandler($errorHandler);

// Run App & Emit Response
$response = $app->handle($request);
$responseEmitter = new ResponseEmitter();
$responseEmitter->emit($response);