[wp-trac] [WordPress Trac] #42558: Reduce the number of capability checks performed by the Customizer

[WordPress Trac]

#42558: Reduce the number of capability checks performed by the Customizer
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 Reporter:  johnbillion  |       Owner:  johnbillion
     Type:  enhancement  |      Status:  accepted
 Priority:  normal       |   Milestone:  Awaiting Review
Component:  Customize    |     Version:
 Severity:  normal       |  Resolution:
 Keywords:  needs-patch  |     Focuses:  performance
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Comment (by westonruter):

 Related: a setting's `sanitize` and `validate` methods currently get
 called every time that its dirty value is read. If a given changeset
 (post) value for a setting hasn't changed, then the value returned should
 be whatever was previously sanitized/validated. This could yield a much
 higher performance improvement than reducing the cap checks. See #41271.

 Some previous work on caching was done in #32103.

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Ticket URL: <https://core.trac.wordpress.org/ticket/42558#comment:2>
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