[wp-trac] [WordPress Trac] #54221: _transient_dirsize_cache is set to autoload=yes and kills db performance if it grows (20MB in our case)

[WordPress Trac]

#54221: _transient_dirsize_cache is set to autoload=yes and kills db performance if
it grows (20MB in our case)
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 Reporter:  archon810                |       Owner:  spacedmonkey
     Type:  defect (bug)             |      Status:  assigned
 Priority:  normal                   |   Milestone:  6.4
Component:  Database                 |     Version:  2.8
 Severity:  major                    |  Resolution:
 Keywords:  has-patch changes-       |     Focuses:  administration,
  requested                          |  performance
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Comment (by nicomollet):

 @spacedmonkey I added my new patch.
 Took care of the expiration after early return.
 It doesn't include `wp_installing()` condition.

 > Question, do we need to clean the transient / update the autoload value
 on upgrade? Say in wp_upgrade?
 I don't think this transient needs cleaning on upgrade. It only contains
 list of folders sizes in WP.

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Ticket URL: <https://core.trac.wordpress.org/ticket/54221#comment:44>
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