![]() ![]() The Twig template: since I wanted the layout for the product display to be different depending on device, I targeted the template.In services.yml - only on local or dev maybe - enable to view all of the tags and contexts that are impacting the page. There are more useful tidbits in the presentation that John Doyle, our CTO, gave at the DC Meetup in 's snippet ( #11) helped me greatly and I was able to use Mobile Detect with the following code in my custom module: DrupalCon Drupal DrupalRenderCache Debugging cache contexts can be hard. Acquia has recently launched their Public Beta for Acquia Purge as well, so if you are hosting on Acquia, it simplifies the process significantly. When I save my node to make this update, it will trigger a cache invalidation of all nodes that have “node:123” in their cache tag list, thus ensuring that my new title shows up on pages where it is referenced.įor more advanced cache purging (memcache, varnish, CDNs), you will need to utilize the purge module. Now, we want to change the title of that page to be “Drupal 8 Render Caching”. In the example above, assuming that we have followed best practices and rendered our cache property arrays, the cache tag of “node:123” should have been added to the render tags array of the homepage, product landing pages and relevant blog posts that reference this item. Lets walk through an example: We have a website that has a blog post node/123: “My Drupal 8 Render Test” which is referenced in the recent content section on the home page, featured on a few of our product landing pages and in the related content of other blog pages. Is the website complex enough to require custom render processing?Ĭache tags are where the magic happens! Cache tags allow the system to identify dependencies to a render object and invalidate pages when there are changes made to the dependent page.Īs mentioned above, cache tags are custom identifiers that this render array depends on to render properly, such as Referenced Entity ID’s.9, except that they only need to apply if the visual presentation can be achieved with the. Is there any content that is context specific? (ie. W3CSS Theme is the first Drupal theme that uses the w3.Are there any highly dynamic sections of the website? (ie.How often are pages on my site updated?.Some questions that may help you in the early stages of your project would be: Drupal 9 readiness wizonesolutions authored 1 week ago' which happens to answer your D9 question too. Working with render caching is something that you should be thinking about from the beginning of your project. On the Drupal side of things, today I was tearing my hair out because, as it turned out, I wrote context instead of contexts in a cache array. You are able to add and/or customize this for any render element. The render cache is a “#cache” property that is defined on your render arrays. Cache max-age – determines how long the item I am rendering can be cached for.Cache Tags – custom identifiers that this render array depends on to render properly, such as Referenced Entity ID’s.Does my display change based on user role, language, time of day, location, etc? Cache Contexts – variations of what I am rendering.Web server, load balancer, cache solutions. ![]() ![]()
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