From memory async will override defer if both are specified (but check spec to be sure) Isn’t async vs defer for GA a matter of how comfortable someone is with the data loss from loading it later vs the impact it has on pushing other JS execution back?
...otherwise, on a slow link like this, you're spending a lot of your bandwidth in the critical moments on connection setup on stuff that doesn't actually improve the user experience.
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The spinner element seems to get blocked by lots of stuff, even though it's definition is inlined. Naively I'd expect that to be painting at the ~2s mark, rather than 4.3s as I see here: https://www.webpagetest.org/video/compare.php?tests=190802_7Q_3a7b3a5321251394011376ae4f1798be-r%3A1-c%3A0&thumbSize=200&ival=100&end=full …
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This is really interesting, I'm surprised by that as well. The test even says "Start Render" occurs at 4s
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thanks for taking the time to look at this. There's a good chance you caught the search API endpoint on a restart / cold start (i had just deployed around the time it ran). I re-ran on 3G and saw a much more reasonable 446ms response time for that endpoint
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Right, I'm not so stressed about that latency (backend is much easier to fix!), it's when the request gets kicked off that I'm highlighting.
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