Kevin Farrugia

683 posts

Kevin Farrugia

@imkevdev

Web performance consultant. Be kind. He/him. Find me on BlueSky: https://t.co/S4IV2Tztn3

Malta Katılım Ağustos 2010

539 Takip Edilen262 Takipçiler

Kevin Farrugia@imkevdev·11 Eki

@Rich_Harris @nargilelelele The data and query are publicly available and I would welcome your feedback. The LCP measurement is taken from CrUX, so it includes pre-rendering but no soft navigations. The number of client-side Astro sites (mobile) is very small at 128. docs.google.com/spreadsheets/d…

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Rich Harris@Rich_Harris·11 Eki

@nargilelelele i suspect this is mostly a statistical artifact — there are likely very few client-rendered astro apps

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Rich Harris@Rich_Harris·11 Eki

A few takeaways from this remarkable data: 1. Yes, SSR matters. SvelteKit users sometimes get frustrated that it's too SSR-centric, and we have plans to address that in the next major version. But SSR is the default for a reason! Our ultimate responsibility is to end users

Ben McCann@BenjaminMcCann

Some data from Google (big thank you to @rick_viscomi and @imkevdev!) Client-side-only SPAs are extremely detrimental to latency as they add a network round-trip before rendering begins. You can win at LCP by making it harder to build client-side apps😉

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Kevin Farrugia@imkevdev·8 Nis

@samthor @Indiequest1 @malchata However I cannot tell the extent to which it affects Kuto. I do not expect it to have a significant impact and from the tests I ran so far, the impact is tiny.

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Kevin Farrugia@imkevdev·8 Nis

@samthor @Indiequest1 @malchata The core problem is that when streaming, V8 "guesses" whether the script will be used as a module or not, since that will affect how the script is parsed. If it guesses incorrectly, it ignores the streaming parsing results and reparses it again.

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sam "zerowidthspace" thor@samthor·24 Mar

I spoke about kuto.dev this week at SydJS, thank you: youtube.com/watch?v=OUi0Lh…

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Kevin Farrugia@imkevdev·15 Şub

@firt Is there a list of affected APIs? We noticed that the WebShare API is not working well either (even when the app is opened in Safari browser)

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Maximiliano Firtman@firt·8 Şub

It seems it wasn’t a bug 😡 🔥Apple may remove PWA support for European users, a feature launched by Steve Jobs in 2008. 👉It also means no Web Push. ⚠️Installed PWAs may lose their storage and will render a dialog saying “it will open from your default browser from now on”

Maximiliano Firtman@firt

It looks like a huge bug in 17.4 beta for PWAs

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Kevin Farrugia@imkevdev·6 Şub

@iamakulov Good luck! That's a nice write-up too. :)

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Ivan Akulov@iamakulov·5 Şub

Summarized some learnings re: money, career, and personal things from my years of self-employment: iamakulov.com/notes/lessons-…

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Ivan Akulov@iamakulov·5 Şub

Life update: after ~6 years of doing web perf consulting, I turned the page and joined @framer. I’ll be leading site performance efforts there, together with a team of amazing engineers 🖤

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Kevin Farrugia retweetledi

Henri Helvetica 🇭🇹 👨🏾‍🚀 🚀@HenriHelvetica·24 Oca

🚀 the second is another course from the Google team on Web/Dev. I talked about this w/ @imkevdev @ @PerfNowConf. Another free course: bit.ly/learn-perf Both can be done at your own place, but are meant to really bring you to *speed* on modern perf (2/n) RT? #100DaysOfPerf

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Kevin Farrugia retweetledi

Henri Helvetica 🇭🇹 👨🏾‍🚀 🚀@HenriHelvetica·24 Oca

🚀 On day 2 of #100DaysOfPerf, want to share 2 foundational resources : 1. @scottjehl launched a course that is now accessible from @RealWebPageTest , for FREE: bit.ly/wpt-lfwp This is something for those really trying gather what modern #webperf is like. (RT?) (1/n)

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Kevin Farrugia retweetledi

Stoyan Stefanov 🪩@stoyanstefanov·1 Oca

🪩 Web Performance calendar bonus 4 🔗 calendar.perfplanet.com/2023/server-ti… 🎇 Nishu Goel (@TheNishuGoel) not only shows us 70% perf improvement with the help of Server-Timing 🛠️ but also ships a new open source tool to go with the article And that's a wrap. Happy 123123 day and 2024 year!

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Kevin Farrugia retweetledi

Stoyan Stefanov 🪩@stoyanstefanov·2 Ara

🪩 Web Performance calendar day 2 with @kurtextrem ⏱️ revisiting a study on parsing large chunks of JSON, e.g. those used to pass state in SPA-like apps 🙀 surprise: things in 2023 look different than 2019 🔗 calendar.perfplanet.com/2023/fastest-w…

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Kevin Farrugia retweetledi

Matt Hobbs (@TheRealNooshu@hachyderm.io)

Matt Hobbs (@[email protected])@TheRealNooshu·29 Kas

The video of my @PerfNowConf talk “Bridging the Digital Divide using Web Performance” is now available to watch! 😍 The video, presentation, notes, and all references are available here: talks.nooshu.com/N86m1L/bridgin… I enjoyed writing it,I hope you enjoy it too. #webperf #perfmatters

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Kevin Farrugia retweetledi

performance.now() conference@PerfNowConf·30 Kas

Noisy Real User Monitoring (RUM) data can ruin your day! At #PerfNow, @TimVereecke introduced a fresh concept called “Human Visible Navigations” (HVN) to tackle this risk. Slides: scalemates.com/akamai/perfnow… youtube.com/watch?v=YzkdiT…

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Kevin Farrugia@imkevdev·24 Kas

That was fun! 😁 Thanks Henri.

Henri Helvetica 🇭🇹 👨🏾‍🚀 🚀@HenriHelvetica

✨ The Hallway Track w/ @imkevdev ✨ Malta's finest Kevin Farrugia, Web Perf Consultant was also my guest. He was one of the main contributors of the web.dev perf course. We chatted about his start as well as perf literacy. Enjoy! 🎥: youtube.com/watch?v=wNIA-9…

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Kevin Farrugia retweetledi

Firefox Nightly 🔥@FirefoxNightly·9 Kas

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Kevin Farrugia@imkevdev·1 Kas

@TimVereecke What do you mean by "CSS property to render elements only when closed"?

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Tim Vereecke@TimVereecke·1 Kas

My Top 3 of missing Performance features: - DPR capping - Vary based on a specific cookie - CSS property to render elements only when closed #webperf

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Kevin Farrugia retweetledi

Barry Pollard@tunetheweb·1 Kas

@imkevdev and @malchata have launched “Learn Performance”, the latest in our series of free courses from @ChromiumDev . Check it out! web.dev/learn/performa…

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Kevin Farrugia@imkevdev·22 Eyl

Munich tested a number of different methods to protect cyclists on bicycle lanes. Would be nice if #malta even pretended to try.🤷 muenchenunterwegs.de/content/1372/d… (Photo from July 2022)

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Kevin Farrugia retweetledi

Addy Osmani@addyosmani·4 Eyl

Tip: In @ChromeDevTools you can now hide network requests from Chrome extensions! 😍 Huge for focusing on just your code when profiling performance.

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Kevin Farrugia retweetledi

Chrome UX Report 📊@ChromeUXReport·9 Ağu

Do you use the CWV Tech Report? cwvtech.report It merges the CrUX dataset and @HTTPArchive crawl data to trend CWVs by technology. We're working on a brand new version with a new UI and would love to hear how you use the current version: github.com/HTTPArchive/cw…

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Kevin Farrugia@imkevdev·25 Tem

@iamakulov This was client side only, no server side rendering. 🫣 And similarly, I wouldn't expect the batching to have such an impact. Would the "yielding" in performUnitOfWork work even when not using useTransition? I will try to create a repro somehow.

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Ivan Akulov@iamakulov·25 Tem

@imkevdev But also any chance the client was already using <Suspense> anywhere in the app (eg for React.lazy) + was doing SSR/SSG? <Suspense> boundaries get hydrated differently with React 18; that improves TBT a lot and should improve with INP too

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Kevin Farrugia@imkevdev·24 Tem

@iamakulov have you come across any case studies on the impact to Long Tasks or INP after upgrading to React 18 (before even using the new APIs)? TIA. 🙏

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Keşfet

@Rich_Harris @nargilelelele @samthor @malchata @firt @iamakulov @framer @PerfNowConf