How to programmatically invalidate the cache of every node

Question

I have a form submit function that is meant to invalidate the cache of every node if a specific field is altered. Here's how I'm attempting it.

$config = $this->configFactory
  ->getEditable('my_config.settings')
  ->get();
if ($form_state->getValue('global')['header_button'] != $config['global']['header_button']){
  // Header Button Changed
  \Drupal\Core\Cache\Cache::invalidateTags(['node_list']);
} 

From what I've researched I assumed \Drupal\Core\Cache\Cache::invalidateTags(['node_list']); would invalidate the cache on every node, but the changes to the nodes are not appearing to anonymous users. Not sure if it matters but the change that is made affects what is rendered in region--header.html.twig rather than node.html.twig.

I've looked at How do I invalidate the cache of an entity? but the answers there did not work.

Answer 1

The node_list cache tag is indeed invalidated by every node change but it's not the other way, that it invalidates every node. The cache tag is only added to the result of node entity queries, not to single nodes.

For a configuration change, it's OK to invalidate the entire render cache, at least for a typical configuration option not changed in the normal operation of the website. For example, Drupal core does the same when theme settings are saved. This is not as time-consuming as clearing the entire Drupal cache:

Cache::invalidateTags(['rendered']);