# ShouldUseCachedPageDataIfAvailableEvent¶

New in version 12.0: This event was introduced.

This event allows TYPO3 extensions to register event listeners to modify if a page should be read from cache (if it has been created in store already), or if it should be re-built completely ignoring the cache entry for the request.

This event can be used to avoid loading from the cache when indexing via CLI happens from an external source, or if the cache should be ignored when logged in from a certain IP address.

## API¶

class TYPO3\CMS\Frontend\Event\ShouldUseCachedPageDataIfAvailableEvent

Event to allow listeners to disable the loading of cached page data when a page is requested.

Does not have any effect if “no_cache” is activated, or if there is no cached version of a page.

getController()
Return type: TYPO3\CMS\Frontend\Controller\TypoScriptFrontendController
getRequest()
Return type: Psr\Http\Message\ServerRequestInterface
shouldUseCachedPageData()
Return type: bool
setShouldUseCachedPageData(bool shouldUseCachedPageData)
Parameters: $shouldUseCachedPageData (bool) – the shouldUseCachedPageData ## Example¶ Registration of the Event in your extensions’ Services.yaml: my_extension/Configuration/Services.yaml MyVendor\MyExtension\Frontend\MyEventListener: tags: - name: event.listener identifier: 'my-package/avoid-cache-loading'  The corresponding event listener class: my_extension/Classes/Frontend/MyEventListener.php use TYPO3\CMS\Frontend\Event\ShouldUseCachedPageDataIfAvailableEvent; class MyEventListener { public function __invoke(ShouldUseCachedPageDataIfAvailableEvent$event): void
{
if (!($event->getRequest()->getServerParams()['X-SolR-API'] ?? null)) { return; }$event->setShouldUseCachedPageData(false);
}
}