[wp-trac] [WordPress Trac] #64696: Real time collboration effectively disables persistent post caches while anyone edits a post

[WordPress Trac]

#64696: Real time collboration effectively disables persistent post caches while
anyone edits a post
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 Reporter:  peterwilsoncc             |       Owner:  (none)
     Type:  defect (bug)              |      Status:  new
 Priority:  normal                    |   Milestone:  7.0
Component:  Posts, Post Types         |     Version:  trunk
 Severity:  normal                    |  Resolution:
 Keywords:  has-patch has-unit-tests  |     Focuses:  performance
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Comment (by peterwilsoncc):

 I've created [https://github.com/WordPress/wordpress-develop/pull/11119
 PR#11119] for moving the awareness state to transients as a much
 simplified approach:

 * `WP_Query` cache accuracy is retained
 * transient cache key uses the post ID rather than the room ID, the
 existing post meta is single use only (ie, only one item of that name is
 stored per post) so I think the post ID is fine
 * I've set the transient expiry to one hour as a pretty arbitrary number.

 This reduces the `WP_Query` cache invalidation back to the following:
 * actual edits are made to a document
 * heartbeat triggers

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Ticket URL: <https://core.trac.wordpress.org/ticket/64696#comment:33>
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