[wp-trac] [WordPress Trac] #64157: Introduce constant or filter to prevent wp-cron.php triggering cron jobs.

[WordPress Trac]

#64157: Introduce constant or filter to prevent wp-cron.php triggering cron jobs.
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 Reporter:  peterwilsoncc  |      Owner:  (none)
     Type:  enhancement    |     Status:  new
 Priority:  normal         |  Milestone:  Awaiting Review
Component:  Cron API       |    Version:
 Severity:  normal         |   Keywords:
  Focuses:  performance    |
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 The constant `DISABLE_WP_CRON` allows developers to
 [https://developer.wordpress.org/apis/wp-config-php/#disable-cron-and-
 cron-timeout prevent the triggering of loopback requests] to the `wp-
 cron.php` endpoint.

 However, the constant does not prevent the `wp-cront.php` endpoint from
 running events registered via the WP Cron API.

 `DISABLE_WP_CRON` was introduced prior to the existence of WP-CLI, so the
 recommended method for executing jobs via real cron was to execute the
 script directly or use curl to call the endpoint.

 Now that WP CLI does exist, the best method for running wp-cron via real
 cron is to call `wp cron event run --due-now` or similar.

 With this new best practice, I think it would be beneficial to allow
 developers to disable the wp-cron.php endpoint. Hitting the endpoint can
 be resource intensive and, for sites using real cron, lead to conflicts.

 I think a constant or filter `disable_wp_cron_endpoint` would be
 beneficial in the context of modern sites using WP CLI.

 The value of `DISABLE_WP_CRON` would need to default to the new
 filter/constant as firing loopback requests to an endpoint that doesn't do
 anything would be a little bit silly.

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Ticket URL: <https://core.trac.wordpress.org/ticket/64157>
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