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check_ca's profile
(╯°□°)╯︵ɐɔ‾ʞɔǝɥɔ
(╯°□°)╯︵ɐɔ‾ʞɔǝɥɔ
(╯°□°)╯︵ɐɔ‾ʞɔǝɥɔ
@check_ca

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(╯°□°)╯︵ɐɔ‾ʞɔǝɥɔ

@check_ca

Pure Fictional programmer. JavaScript expert of my neighborhood.

Rennes, France
Joined March 2009

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    1. Ilya Grigorik‏Verified account @igrigorik 8 May 2019
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      Replying to @igrigorik @scottvivian and

      Point being, serving HTML with static content+markup is still a great performance best practice that helps both browsers to render faster, and crawlers to find things more quickly. That said, this does not mean that JS is "bad", it just requires more work & time to process.

      2 replies 0 retweets 2 likes
    2. Adam Heaton‏ @adamheatonuk 8 May 2019
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      Replying to @igrigorik @scottvivian and

      I guess what he is trying to ask is, should we expect pages with content hidden behind JS to be picked up and indexed instantly now with this change or will there still be a delay?

      1 reply 0 retweets 0 likes
    3. Ilya Grigorik‏Verified account @igrigorik 8 May 2019
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      Replying to @adamheatonuk @scottvivian and

      no, they're not and cannot be equivalent in speed. JavaScript requires additional CPU cycles, which by definition take resources and more time. The actual latency will vary based on JS in question, site, etc.

      2 replies 0 retweets 0 likes
    4. (╯°□°)╯︵ɐɔ‾ʞɔǝɥɔ‏ @check_ca 10 May 2019
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      Replying to @igrigorik @adamheatonuk and

      Here is a good example to guess how fast it is. This website http://bugs.chromium.org  migrated very recently to a new UI and now is using the shadowRoot to store all the text contents. Only Googlebot evergreen can index it. Currently, there are ~20/30 pages indexed per day....

      1 reply 0 retweets 0 likes
    5. (╯°□°)╯︵ɐɔ‾ʞɔǝɥɔ‏ @check_ca 14 May 2019
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      Replying to @check_ca @igrigorik and

      Why is this so hard to talk about this issue? Let's face it, some people are using web components massively in production and this *performance* issue cannot be denied. SSR won't really help to fix this since HTML doesn't offer any solution to serialize these contents /cc @JohnMu

      1 reply 0 retweets 0 likes
    6. Ilya Grigorik‏Verified account @igrigorik 21 May 2019
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      Replying to @check_ca @adamheatonuk and

      sorry, missed this.. How are you measuring 20/30 pages per day?

      1 reply 0 retweets 0 likes
    7. (╯°□°)╯︵ɐɔ‾ʞɔǝɥɔ‏ @check_ca 21 May 2019
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      Replying to @igrigorik @adamheatonuk and

      I was measuring this by looking at the search results of the "past week" during 4-5 consecutive days. I cannot measure this more precisely on my end.

      1 reply 0 retweets 0 likes
    8.  🍌 John  🍌‏Verified account @JohnMu 22 May 2019
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      Replying to @check_ca @igrigorik and

      One of the problems with that site is that's barely crawlable. For example, https://bugs.chromium.org/p/chromium/issues/list … (linked from the homepage) is blocked from crawling. We have to find the URLs linked from elsewhere on the web, it's quite inefficient & independent of the framework used.

      1 reply 0 retweets 0 likes
    9. (╯°□°)╯︵ɐɔ‾ʞɔǝɥɔ‏ @check_ca 22 May 2019
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      Replying to @JohnMu @igrigorik and

      Well, this does not explain the fact that almost all pages have as title "chromium Monorail". This clearly shows there is an issue with the framework used...

      1 reply 0 retweets 0 likes
    10.  🍌 John  🍌‏Verified account @JohnMu 22 May 2019
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      Replying to @check_ca @igrigorik and

      Not necessarily. Google generates titles automatically, they're not always exactly what the page specifies (often they're also rewritten to match a query). I really think with that particular site, it's primarily a problem with normal crawling rather than anything else.

      1 reply 0 retweets 0 likes
      (╯°□°)╯︵ɐɔ‾ʞɔǝɥɔ‏ @check_ca 22 May 2019
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      Replying to @JohnMu @igrigorik and

      (╯°□°)╯︵ɐɔ‾ʞɔǝɥɔ Retweeted (╯°□°)╯︵ɐɔ‾ʞɔǝɥɔ

      But the descriptions were not better... cf this tweet I sent you some weeks agohttps://twitter.com/check_ca/status/1121561114276433920 …

      (╯°□°)╯︵ɐɔ‾ʞɔǝɥɔ added,

      (╯°□°)╯︵ɐɔ‾ʞɔǝɥɔ @check_ca
      And it looks like it's also complicated for Googlebot https://www.google.com/search?q=site:bugs.chromium.org&tbs=qdr:w … /cc @johnmu pic.twitter.com/YRofWgm9p4
      Show this thread
      3:20 AM - 22 May 2019
      1 reply 0 retweets 0 likes
        1. New conversation
        2.  🍌 John  🍌‏Verified account @JohnMu 22 May 2019
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          Replying to @check_ca @igrigorik and

          If there's no description meta tag, then the site:-operator results can be a bit weird, since it's not a normal query. There are certainly things the site could do much better, but as far as I can tell, the framework isn't the problem.

          2 replies 0 retweets 1 like
        3. (╯°□°)╯︵ɐɔ‾ʞɔǝɥɔ‏ @check_ca 22 May 2019
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          Replying to @JohnMu @igrigorik and

          Thank you very much for your replies. Let's say this site would do dynamic rendering with @seo4ajax (I'm the founder). How SEO4Ajax is supposed to serialize all these shadow root contents? There are no standard for this today. Would <template> tags be OK (like in Chrome's MHTML)?

          0 replies 0 retweets 0 likes
        4. End of conversation

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