What evidence would be persuasive to you? Any SSR app being faster than any Polymer app at FMP? Seems like there will be confounding factors.
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For example, these results are pretty lackluster. SSR would at least improve the awful FMP results.pic.twitter.com/gv5xOO9JTf
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You can dismiss the results from our Preact & Glimmer experiment if you want, but that was a ~60kb JS payload for the same app we ran with both CSR and SSR with rehydration. CSR was indeed faster for fast devices/networks, but SSR handily outperformed at 90th %ile.
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And this was even with several non-optimal conditions, like the gating API call for SSR performing at 1.2s at 90th %ile. A more optimized service tier would have made the improvement even larger, I suspect.
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I believe
@chadhietala has the WPT traces if you'd like to see them.2 replies 0 retweets 1 like -
Replying to @tomdale @slightlylate and
Don’t want to be involved here but feel compelled to respond. Data helps toward the end goal of a great experience for users of many applications. I’ll assume variables are equally accounted for in cells and look at the results, can you provide the raw data to support claims?
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Replying to @kristoferbaxter @slightlylate and
Take Glimmer out so I don't have a horse in the race and just look at Preact. Preact is much lighter than Polymer out of the box, and for the experiment our JS bundle size was tiny (much much smaller than e.g. YouTube Gaming). Even in that scenario, SSR had better FMP at 90p.
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Replying to @tomdale @kristoferbaxter and
All I'm trying to say is that Preact is a much better fit for pages at the extreme end of performance, because it's both lighter than Polymer and gives you the option of SSR if you need it.
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Replying to @tomdale @kristoferbaxter and
@chadhietala posted traces in the comments: https://infrequently.org/2018/09/the-developer-experience-bait-and-switch/#comment-256438 … Here are the preact-only sets of runs: CSR: http://www.webpagetest.org/result/180202_67_ae21f1a34a7f570599edae125e1c292a/ … SSR+CSR: http://www.webpagetest.org/result/180202_VF_84ae556dc7c51e405d5fccccccb383ae/ …1 reply 0 retweets 0 likes -
Replying to @slightlylate @tomdale and
As noted in the comments of the post,there's a lot of noise between runs. The user-timeline data seems to vary in access cost, which I presume affects both equally? Hard to know.
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Shopping for two good examples to set up a side by side...this might be the best I can do: http://www.webpagetest.org/video/compare.php?tests=180202_67_ae21f1a34a7f570599edae125e1c292a-r%3A3-c%3A0%2C180202_VF_84ae556dc7c51e405d5fccccccb383ae-r%3A1-c%3A0&thumbSize=200&ival=100&end=visual …
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