[wp-trac] [WordPress Trac] #44229: Use CDNs where possible to serve external assets like jQuery

[WordPress Trac]

#44229: Use CDNs where possible to serve external assets like jQuery
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 Reporter:  jacklenox    |       Owner:  (none)
     Type:  enhancement  |      Status:  new
 Priority:  normal       |   Milestone:  Awaiting Review
Component:  General      |     Version:
 Severity:  normal       |  Resolution:
 Keywords:               |     Focuses:
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Comment (by jacklenox):

 Replying to [comment:7 SergeyBiryukov]:
 > Unless I'm missing something, there will still be an HTTP request to an
 unavailable resource before switching to fallback, leading to a slower,
 not faster experience.

 Ah I see. Yes, this is a consideration. There are a number of ways this
 could be mitigated:

 - When the CDN doesn't respond, a cache value could be set to not bother
 trying it again for a predetermined amount of time, perhaps indefinitely.
 As soon as the local version of jQuery is loaded, there is no longer a
 case for trying to provide the client with the CDN version. The cache
 value could include country data which would prevent future users from the
 same country experiencing this problem.
 - There could be an option to unset a constant that would allow people to
 disable the CDN in their wp-config. E.g. something like `define(
 'WP_USE_CDN', false );`

 I think in the vast majority of cases, the CDN option would work fine,
 save a lot of energy and represent an improvement for most users.

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Ticket URL: <https://core.trac.wordpress.org/ticket/44229#comment:8>
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