#Drupal 9 cache contexts update#

Additionally at this point we have not changed anything to do with the caching of the breadcrumb. But we have not yet considered how this might have affected caching. Great! We have the breadcrumb we are looking for.

Home > Page Level 1 > Page Level 2 > Page Level 3 Now the following page will have the following breadcrumb: Here we have altered it to add the current page title to the end: For many websites, we also need to display the current page title in the breadcrumb. By default, the breadcrumb only shows the path up to and including the parent page. In this example, we will take a look at how cache contexts can be used and important considerations for developers, by modifying the default breadcrumb in Drupal 8. Content is often reused across multiple pages and the cached object could be rendered differently based on the environment's state. Cache contextsĬache contexts are used when a dependency exists on an environment-specific object. In this case node:18 tag will be invalidated, and thus the block that contains the tag node:18 will also be invalidated.

#Drupal 9 cache contexts update#

So when we update or add a new news node, we will invalidate all caches that contain that particular cache tag. The news story block, on the other hand, would have specific tags that line up with the node ID’s that currently appear in the list node:16 node:17 node:18. The homepage might have cache tags specific to the page itself node:5, but this will not invalidate the entire homepage when a news story node:18 is added since the cache tag does not exist in the list of tags for the homepage. How would the homepage cache (more specifically the news block cache) be cleared if we added a news story to the top of this list?Ĭache tags are used to inform the system when the news block would need to be invalidated. This site has a list of three nodes that are displayed in a block on the homepage.

As an example, let’s consider a site with a news story content type and view page. There are three main components to the cache layer in Drupal 8:Ĭache tags are for dependencies on data that are managed by Drupal, and are the easiest way to control cache. This means that we can control exactly when a block on a page has its cache cleared instead of clearing the entire page cache. It has become highly customizable and dynamic, and now has the ability to cache individual blocks or items on a page. However, today we are going to dive into one of the other major updates of Drupal 8 that provides a huge boost to performance and perceived performance: the cache layer.Ĭaching in Drupal 8 has received a much needed overhaul. Some of the prominent features are the inclusion of the widely used views module into core, configuration management, and an easy to use translation service. Whether you decide to delete the entire bundle or just resources from a specific namespace, it’s important to delete the operator ConfigMap ( operator-environment-config).Drupal 8 has evolved in many ways over its predecessor. To only delete resources within a specific namespace and leave other cluster-wide resources intact, you need to delete each resource manually. You can delete the entire operator bundle, but this will also delete any cluster-wide resources created by the operator. There are two ways to delete the operator. If you want to delete your PVCs, you’ll have to delete them manually. However, persistent volume claims (PVCs) for your cluster are not deleted in the process. When you delete your cluster, your databases and the REC custom resource are also deleted. Run kubectl delete rec from your K8s cluster. To delete a Redis Enterprise cluster managed by the operator:ĭelete all the databases in your cluster. When you delete a database, your data and the REDB custom resource are also deleted. To delete a database managed by the Redis Enterprise Kubernetes operator, run kubectl delete redb from your K8s cluster.