[wp-trac] [WordPress Trac] #57114: Add caching to is_block_theme

[WordPress Trac]

#57114: Add caching to is_block_theme
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 Reporter:  spacedmonkey  |      Owner:  (none)
     Type:  enhancement   |     Status:  new
 Priority:  normal        |  Milestone:  6.2
Component:  Themes        |    Version:  5.9
 Severity:  normal        |   Keywords:
  Focuses:  performance   |
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 The function `is_block_theme` does a check on the filesystem if some times
 existing. This function could be called 100 of times per page request
 which would result in many many lookups. This value does not change,
 unless a theme is upgraded. Added a check would be simple and would save
 some CPU resources in looking up files.

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Ticket URL: <https://core.trac.wordpress.org/ticket/57114>
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