This is similar to #2403155: Add support for AJAX node view count → but for Drupal 8+.
The core statistics module triggers an AJAX request to /core/modules/statistics/statistics.php and this small PHP script increments the count.
This allows counting to work even when using a caching reverse-proxy like Varnish.
I am not sure which hooks or events are triggered by statistics.php.
Active
1.0
Code
It should be possible to do this by decorating the statistics.storage.node service (which is called by statistics when recording a new view with AJAX).
You can find a similar example here: https://git.drupalcode.org/project/statistics_rolling/-/blob/1.x/src/Rol...