[wp-trac] [WordPress Trac] #58470: Add configurable batching to `wp_scheduled_delete` for controlling cleanup operations

[WordPress Trac]

#58470: Add configurable batching to `wp_scheduled_delete` for controlling cleanup
operations
-------------------------+-----------------------------
 Reporter:  johnrom      |      Owner:  (none)
     Type:  enhancement  |     Status:  new
 Priority:  normal       |  Milestone:  Awaiting Review
Component:  Cron API     |    Version:  trunk
 Severity:  normal       |   Keywords:
  Focuses:  performance  |
-------------------------+-----------------------------
 When posts are trashed, they are automatically cleaned up by the
 `wp_scheduled_delete` wp-cron task. However, both the frequency that this
 cron task runs and the number of posts that can be cleaned up at once time
 lack configurability.

 Imagine a shop which has more than 100,000 orders: trashing thousands or
 tens of thousands of them at once could cause the website to become
 unresponsive when it comes time to clean up the trash.

 I suggest adding two constants:

 ||= Constant Name =||= Default Value =||= Description =||
 || `EMPTY_TRASH_SCHEDULE` || `daily` || The cron schedule on which the
 trash scheduler runs. This is useful for increasing the number of times
 the cleanup process runs when using batching to delete many posts. ||
 || `EMPTY_TRASH_BATCH_SIZE` || `50` || The maximum number of posts to
 delete at once. ||

 It may also be useful for these and `EMPTY_TRASH_DAYS` to have filters to
 improve cleanup operations overall.

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Ticket URL: <https://core.trac.wordpress.org/ticket/58470>
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