[wp-trac] [WordPress Trac] #22176: Cache the results of the posts_request_ids query

[WordPress Trac]

#22176: Cache the results of the posts_request_ids query
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 Reporter:  ryan                                 |       Owner:
                                                 |  peterwilsoncc
     Type:  enhancement                          |      Status:  reopened
 Priority:  normal                               |   Milestone:  6.1
Component:  Query                                |     Version:  3.4.2
 Severity:  normal                               |  Resolution:
 Keywords:  needs-dev-note has-patch has-unit-   |     Focuses:
  tests add-to-field-guide                       |  performance
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Changes (by spacedmonkey):

 * status:  closed => reopened
 * resolution:  fixed =>


Comment:

 Reopening, as I have discovered a couple of issues when persistent Object
 Caching.

 - Issue 1 - Cache add is called a lot when persistent Object Caching is
 enabled. This is because `update_post_caches` is called. This function
 should not be called when object cache is enabled.
 - Issue 2 - Cache set is called every WP_Query run, not only the first.

 CC @peterwilsoncc to review my [https://github.com/WordPress/wordpress-
 develop/pull/3348 PR].

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Ticket URL: <https://core.trac.wordpress.org/ticket/22176#comment:63>
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