[wp-trac] [WordPress Trac] #49446: cache the results of get_uploaded_header_images()

[WordPress Trac]

#49446: cache the results of get_uploaded_header_images()
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 Reporter:  pbiron                       |      Owner:  (none)
     Type:  enhancement                  |     Status:  new
 Priority:  normal                       |  Milestone:  Awaiting Review
Component:  Cache API                    |    Version:
 Severity:  normal                       |   Keywords:
  Focuses:  administration, performance  |
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 If the current theme supports `custom-header` and
 `is_random_header_image()` is true, then `_media_states()` calls
 `get_uploaded_header_images()` for **every** row in the media list table.

 If the results of `get_uploaded_header_images()` were cached, the media
 list table would render much quicker, especially if the number of media
 displayed per page is large.

 There is already an inline comment `@todo Caching` which has apparently
 been there since `get_uploaded_header_images()` was added in [17757].

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Ticket URL: <https://core.trac.wordpress.org/ticket/49446>
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