The node_list cache tag is generated automatically when we create a view that displays nodes entity type in Drupal 8. This cache tag will invalidate the cache of all views that list any kind of nodes (page, article, ....) when we make a CUD (create, update, delete) action on any kind of nodes.

At first glance, this seems a very good cache invalidation strategy since when we modify a node through a CUD action, the cache of every views that display nodes will be invalidate to reflect this new change.
(to see the cache tags in your header response, just enable your settings.local.php)

So far so good, but... What would happen if we have a high traffic web site with hundred of different node bundles and hundred of views displaying different kind of nodes?