Andrew Galloni

@rick_viscomi @patmeenan The plan for using heuristics are for 'similar' sites that are not using RUM to measure the impact of hinting strategies. The other interesting thing to consider is when to vary loading strategies for different network conditions and device capabilities.

The @RealWebPageTest has been _cranking_ on this for awhile and it's finally time to share! I could not be more excited to unveil our new Opportunities & Experiments—a way to let you test performance optimizations without touching a single line of code. blog.webpagetest.org/posts/introduc…

103 Early Hint responses are now in the HTML standard! ... lets you to start loading subresources before the main HTML response is complete #early-hints" target="_blank" rel="nofollow noopener">html.spec.whatwg.org/multipage/sema…

I love using @CloudflareDev Workers with @RealWebPageTest to experiment with #WebPerf optimisations. This page's LCP could be 10s faster and FCP 3s faster at 3G with some simple tweaks 😱 @TheRealNooshu has a getting-started guide here: nooshu.com/blog/2021/03/1…

The IESG has approved Extensible Prioritization Scheme for HTTP for publication as an RFC. datatracker.ietf.org/doc/draft-ietf…

@dok2001 @TheRealNooshu We have not been able to reproduce it so putting it down to a transient network issue.

@dok2001 @TheRealNooshu Will investigate. Polish should have no impact on TTFB.

<🧵> I realise scores aren't everything, but I was curious why my blogs WPT scores had dropped for "First Byte Time" and "Cache static content" since upgrading to the Cloudflare Pro plan. #webperf

@edgarasben @kristinlow Custom domain support will be available very soon.

@kristinlow Yeah for sure, I feel many image hosting services are offering expensive custom domains for images. Cloudflare also just release their image hosting, but no mention about custom urls ☹️

Managed to set up AWS S3 image hosting with custom subdomain urls! It was a messy process (like anything AWS is...) but now it's done!! Also wanted all my image urls to be under the root domain. It was easy to make url rewrites with NextJS (in next.config.js): #buildinpublic

@AndyDavies @anthony_ricaud @tunetheweb @simonhearne @SimmerVigor It looks like it is just bandwidth limited to me.

#WebPerf is so much fun, there are always optimisations to be made! I subset my one common font (saving 12kB), then noticed that the font preload was stealing bandwidth from CSS. I added the CSS as a preload before the font preload... 😱 1,000ms / 25% improvement on slow 3G!

I'm so excited to welcome @nokusu as a maintainer on @hyperium_rs! hyper.rs/blog/2021/05/0… 🥳#rustlang

@levelsio @Cloudflare @eastdakota The advice is to execute third party code after the page has loaded which is precisely how Rocket Loader works. There is a plan to load the script first party which will save an extra connection and also remove this warning.

@cloudflare @eastdakota Google doesn't like the Rocket Loader, is there any way to make this better? Or is it just a proxy for my own slow JS?

Excited to be partnering with Wordpress.com to bring @Cloudflare’s Automatic Platform Optimization (APO) to more of the web! blog.cloudflare.com/cloudflare-and…

@TheRealNooshu @johnbrett_ @AdriVanHoudt_ github.com/twoflags-io/tw… and blog.cloudflare.com/enhancing-opti… are 2 A/B examples.

@johnbrett_ @AdriVanHoudt_ Cc: @dot_js may be able to point you in the right direction.

Was wondering how to do A/B testing without degrading page load speed for Cloudflare edge cached sites. How are people doing it these days, and what service do you use? CF workers + some service? If so, anyone with *positive experiences* of a particular service/setup?

New blog post: 'Setting up Cloudflare Workers for web performance optimisation and testing': nooshu.github.io/blog/2021/03/1… A step by step guide on how to get started using @Cloudflare Workers and WebPageTest for web performance optimisation. #webperf #perfmatters

Planning on fixing your CLS before it hits the Google search algorithm in May? Do yourself a favor and grab a Cloudflare Worker for rapid prototyping against your live site. Add WebPageTest and you've got a fast way to experiment with fixes before touching prod. #webperf #seo

@csswizardry @patmeenan Sounds good.

@dot_js @patmeenan I’ll ping you tomorrow! Don’t want to bother you at the weekend (he says on a Sunday night). Quick call about it in the week perhaps? It’d be nice to catch up if nothing else.

@CloudflareDev Heya! Is there a way (e.g. via a ?urlParam or request header) to circumvent Rocket Loader from the browser? I just want to try something out real quick and don’t want to disable it sitewide for my client’s site. Thanks!

@csswizardry @patmeenan Hmm ... Can you DM me more details and I will see what I can find out from the Bots team.

@patmeenan @dot_js And this 😬

@patmeenan @csswizardry Hi. There is no way via request params/headers. You can use page rules to disable for a specific page/path. Will take a look into the Safari issue.

@briankardell @AndyDavies @patmeenan How about wrangler tail ? #tail" target="_blank" rel="nofollow noopener">developers.cloudflare.com/workers/cli-wr…

@AndyDavies @dot_js @patmeenan any chance if you know if there _is_ a super easy, non-secondary service requiring kind of way to log errors (even just a daily rotating/short term) from workers and I just can't find it?