[wp-trac] [WordPress Trac] #63717: `fetch_feed()` fails to use data stored in transients.

[WordPress Trac]

#63717: `fetch_feed()` fails to use data stored in transients.
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 Reporter:  peterwilsoncc             |       Owner:  peterwilsoncc
     Type:  defect (bug)              |      Status:  closed
 Priority:  normal                    |   Milestone:  6.9
Component:  External Libraries        |     Version:
 Severity:  normal                    |  Resolution:  fixed
 Keywords:  has-patch has-unit-tests  |     Focuses:  performance
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Comment (by westonruter):

 I was confused why benchmarking server timing for the homepage with the
 theme unit test data imported showed a ''huge'' improvement in 6.9 over
 6.8. It turn out to be due to the Feed widget! When I benchmarked the
 first page of posts, I saw the huge improvement, but when I benchmarked
 the second page of posts, the large change went away. It was due to the
 "Blocks: Widgets" post being on the first page, and this post includes the
 Feed widget. When I benchmark server timing for just that one post with a
 Feed widget, the isolated improvement is dramatic:

 {{{
 npm run research -- benchmark-server-timing --url=http://wp68.local
 /blocks-widgets/ --url=http://wp69.local/blocks-widgets/ --number=100
 --diff --output=md
 }}}

 ||= URL =||= WP 6.8 =||= WP 6.9 =||= Diff (ms) =||= Diff (%) =||
 || Response Time (median) || 266.57|| 34.74|| -231.83|| -87.0%||
 || wp-before-template (median) || 11.95|| 7.86|| -4.09|| -34.2%||
 || wp-template (median) || 252.55|| 25.56|| -226.99|| -89.9%||
 || wp-filter-the_content (median) || 224.5|| 9.35|| -215.15|| -95.8%||
 || wp-total (median) || 264.56|| 33.4|| -231.16|| -87.4%||

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Ticket URL: <https://core.trac.wordpress.org/ticket/63717#comment:11>
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