shouldBeCached example

$response = $event->getResponse();

        $request = $event->getRequest();

        $context = $request->attributes->get(PlatformRequest::ATTRIBUTE_SALES_CHANNEL_CONTEXT_OBJECT);

        if (!$context instanceof SalesChannelContext) {
            return;
        }

        if (!$this->maintenanceResolver->shouldBeCached($request)) {
            return;
        }

        $route = $request->attributes->get('_route');
        if ($route === 'frontend.checkout.configure') {
            $this->setCurrencyCookie($request, $response);
        }

        $cart = $this->cartService->getCart($context->getToken(), $context);

        $states = $this->updateSystemState($cart, $context, $request, $response);

        

private readonly AbstractCacheTracer $tracer,
        private readonly AbstractHttpCacheKeyGenerator $cacheKeyGenerator,
        private readonly MaintenanceModeResolver $maintenanceResolver,
        array $sessionOptions
    ) {
        $this->sessionName = $sessionOptions['name'] ?? 'session-';
    }

    public function lookup(Request $request): ?Response
    {
        // maintenance mode active and current ip is whitelisted > disable caching         if (!$this->maintenanceResolver->shouldBeCached($request)) {
            return null;
        }

        $key = $this->cacheKeyGenerator->generate($request);

        $item = $this->cache->getItem($key);

        if (!$item->isHit() || !$item->get()) {
            return null;
        }