[wp-trac] [WordPress Trac] #14485: Taxonomy hierarchy cache isn't properly refreshed

[WordPress Trac]

#14485: Taxonomy hierarchy cache isn't properly refreshed
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 Reporter:  thealien                           |       Owner:
     Type:  defect (bug)                       |  wonderboymusic
 Priority:  high                               |      Status:  closed
Component:  Cache API                          |   Milestone:  3.9
 Severity:  normal                             |     Version:  3.0
 Keywords:  needs-unit-tests has-patch commit  |  Resolution:  fixed
                                               |     Focuses:
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Changes (by wonderboymusic):

 * owner:   => wonderboymusic
 * status:  new => closed
 * resolution:   => fixed


Comment:

 In [changeset:"27102"]:
 {{{
 #!CommitTicketReference repository="" revision="27102"
 Regenerate the term hierarchy cache (`{taxonomy}_children`) when it is out
 of sync with the passed taxonomy's `last_changed` value.

 Introduces `taxonomy_hierarchy_is_fresh()`, which is only called in
 `_get_term_hierarchy()`. The taxonomy's `last_changed` value is checked
 against the value of `wp_cache_get( 'hierarchy_last_changed', $taxonomy
 )`.

 Adds a unit test - `Tests_Term:test_hierachy_invalidation()`.

 See [27101], which makes this type of cache invalidation possible.
 Fixes #14485.
 }}}

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Ticket URL: <https://core.trac.wordpress.org/ticket/14485#comment:77>
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