Together with Fabian Franz & Marco Molinari from Tag1 Consulting, I had a session about render caching in Drupal 7 and 8 at DrupalCon Amsterdam.
Marco explained the render performance problems in Drupal 7, the way the Render Cache module for Drupal 7 mitigates these performance problems as well as possible in Drupal 7, but can’t solve everything, because the necessary mechanisms to solve it properly aren’t available there. I explained how cache tags in Drupal 8 have fixed this problem in Drupal 8 completely. And Fabian demonstrated very cool things for the near future: different rendering strategies, such as Facebook’s Big Pipe — which already works in the
render_cache module for Drupal 7, and will only be simpler to implement in Drupal 8!