[wp-trac] [WordPress Trac] #51117: Sitemap & XSL requests execute main query for home page.

[WordPress Trac]

#51117: Sitemap & XSL requests execute main query for home page.
---------------------------+------------------------------
 Reporter:  peterwilsoncc  |       Owner:  pbiron
     Type:  defect (bug)   |      Status:  accepted
 Priority:  normal         |   Milestone:  Awaiting Review
Component:  Sitemaps       |     Version:  5.5
 Severity:  normal         |  Resolution:
 Keywords:                 |     Focuses:  performance
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Changes (by pbiron):

 * owner:  (none) => pbiron
 * status:  new => accepted


Comment:

 I've noticed this as well and thought "why is it bothering to run the main
 query when the results of that aren't used?".

 But I'd point out that sitemaps aren't the only "rewrite rule-only"
 request that does this: `https://example.com/robots.txt` and
 `https://example.com/feed` run the main query as well.

 While looking at this, I was happy to find that the REST API does **not**
 run the main query: it hooks into `parse_request` and short circuits the
 process when handling REST requests.

 I haven't looked in detail yet, but am pretty sure sitemaps, robots.txt
 and feeds could do the same thing.  I wonder whether it would be
 beneficial to introduce a general mechanism that all such "rewrite rule-
 only" requests could build on?

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Ticket URL: <https://core.trac.wordpress.org/ticket/51117#comment:2>
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