spacedmonkey 3b58a4828d Query: Save excessive cache add and sets in WP_Query. ...

In [53941] database query caching was added to `WP_Query`. However on sites with persistent object caching enabled, this resulted in a high number of unnecessary cache set and adds being run on every request. Caches are not set, if the query cache already exists and is cached. Replace usage of `update_post_caches` with `_prime_post_caches` to ensure that only posts that are not in cache are primed. 

Props spacedmonkey, peterwilsoncc, mukesh27.
See #22176.
Built from https://develop.svn.wordpress.org/trunk@54352


git-svn-id: http://core.svn.wordpress.org/trunk@53911 1a063a9b-81f0-0310-95a4-ce76da25c4cd

2022-09-29 10:09:11 +00:00

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