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Ryan Townsend

@twnsnd.com

670 followers 200 following 180 posts

Technology Leader & Distinguished Software Engineer • 20+ YOE in Tech, 10+ as CTO • Public Speaker • LessonsofaCTO.com & TWNSND.com

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Ryan Townsend @twnsnd.com · 14d

This is a fun one: what a 1990s PlayStation game studio taught me about software engineering 🎮 youtu.be/86bnEALGiDY

Software Engineering Insight from 1990s PlayStation Game Development

YouTube video by Lessons of a CTO

youtu.be

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Ryan Townsend @twnsnd.com · 1d

👆🏻

Ryan Townsend @twnsnd.com · 3d

Admittedly, I didn’t go that deep on the implementation.

Looking now, it’s hard to visualise on my mobile but is it guaranteed the injected scripts won’t also execute synchronously when browser-cached?

Ryan Townsend @twnsnd.com · 3d

I guess with continuation you get the `triggerScripts` sooner if there’s no other work.

If I have my logic correct, double rAF lets newly-queued events/timers occur before `triggerScripts`.

Ryan Townsend @twnsnd.com · 3d

Depends when you want the code to run, I guess. Generally writing to the DOM should be within a rAF to minimise the chance of layout thrashing.

Plus rAF works across all browsers.

Ryan Townsend @twnsnd.com · 4d

It won't let me edit my response, but one further thing I'd like to add would be `::slider-segment` state, e.g. `before`, `after`, `between` (rather than solely relying on `nth-child`) and—most importantly, imo—`capped` for styling areas of the slider which are 'constrained' by min/max.

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Reposted by Ryan Townsend

Bramus @bram.us · 5d

At #fronteers #DarkMode, @utilitybend.com proposed the HTML Element.

It unlocks the multi-handle range slider, a pattern you might have already seen when picking a price-range.

Feedback Form (with links to the explainer and demos): docs.google.com/forms/u/0/d/...

Brecht on stage showing some of the demos.

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Ryan Townsend @twnsnd.com · 4d

✅ Fed back.

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Ryan Townsend @twnsnd.com · 4d

B, but with two constraints:

1. each release should be useful independently (e.g. it might cover just one use-case within the wider scope)
2. support for each release should be independently detectable (via `@supports` and the usual JS mechanisms)

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Ryan Townsend @twnsnd.com · 6d

Fwiw @jensimmons.bsky.social I'm totally with you that there could be better names out there.

I use both APIs daily and I still have to look up whether it's 'Command Invokers' or 'Invoker Commands' 🤷‍♂️

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Ryan Townsend @twnsnd.com · 6d

💯 came to say the same things @utilitybend.com

Also don't Interest Invokers act differently on mobile? (or at least it's being discussed? e.g. tap instead of hover)

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Reposted by Ryan Townsend

Leif Niemczik @leifs.website · 6d

messenger.abeto.co

This is freaking insane. The level of polish necessary for this visual fidelity and it all runs flawlessly on mobile. Hats off.

Messenger

It's a small planet, but someone's gotta make the deliveries.

messenger.abeto.co

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Ryan Townsend @twnsnd.com · 6d

When you can hear a picture

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Ryan Townsend @twnsnd.com · 6d

Looking forward to talking about scaling #RubyonRails to hundreds of millions of yearly client revenue @nwrug.org meetup on Thursday 16th in Manchester, my old university city 🙌

Come join us for free 👉 nwrug.org/events/milli...

NWRUG Event: Millions on Rails: A Two-Decade Retrospective on Scaling With Rails, Thursday 16th October

This month, Ryan Townsend will be sharing stories about how he started, scaled, and liquidated a Rails-based startup that at its peak reached £5M ARR: Ryan h...

nwrug.org

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Reposted by Ryan Townsend

Yoav Weiss @yoav.ws · 8d

Compression dictionaries is now an official RFC! www.rfc-editor.org/rfc/rfc9842....

RFC 9842: Compression Dictionary Transport

This document specifies a mechanism for dictionary-based compression in the Hypertext Transfer Protocol (HTTP). By utilizing this technique, clients and servers can reduce the size of transmitted data...

www.rfc-editor.org

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Ryan Townsend @twnsnd.com · 14d

This is a fun one: what a 1990s PlayStation game studio taught me about software engineering 🎮 youtu.be/86bnEALGiDY

Software Engineering Insight from 1990s PlayStation Game Development

YouTube video by Lessons of a CTO

youtu.be

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Ryan Townsend @twnsnd.com · 15d

I was going to say I'm lucky that my fiancée only subjects me to the Australian edition (I allow it because I can at least reminisce about living in Sydney), but earlier she literally chased me around the house with an iPad, forcing me to listen to the cringeworthy wedding rap.

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Reposted by Ryan Townsend

IntentToShip @intenttoship.dev · 20d

Blink: Intent to Ship: Interest Invokers (the `interestfor` attribute)

groups.google.com

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Ryan Townsend @twnsnd.com · 20d

Maybe just reply with "Does the stage have an orchestra pit?"

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Ryan Townsend @twnsnd.com · 20d

Surely it's got to be something you can put your choir skills to work on... kinda like when comedians announce themselves, you could sing yourself on!

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Ryan Townsend @twnsnd.com · 21d

The #1 reason to upgrade to iOS 26… particularly in the UK, spam has been epidemic recently.

The “Screen Unknown Callers” settings in iOS 26, options being “Never”, “Ask Reason for Calling” and “Silence”

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Ryan Townsend @twnsnd.com · 21d

Added an Interop 2026 Proposal for CSS Scroll State: github.com/web-platform... – please upvote!

It would be nice to remove JavaScript requirement for various popular design patterns we're all using on the web (floaty navs, scroll shadows etc)

cc: @nerdy.dev @bram.us
#webperf #webplatform #webdev

CSS Scroll State Queries · Issue #1090 · web-platform-tests/interop

Description CSS Scroll State Queries are one of the final nails in the coffin for requiring JavaScript for a plethora of popular design patterns on the web such as carousels, sliders and shrinking ...

github.com

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Ryan Townsend @twnsnd.com · 21d

Correct me if I'm wrong but we're just waiting on Firefox shipping at-scope now... it's behind a flag, so shouldn't be long! caniuse.com/mdn-css_at-r...

CSS at-rule: `@scope` | Can I use... Support tables for HTML5, CSS3, etc

caniuse.com

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Ryan Townsend @twnsnd.com · 23d

"It’s time to choose frameworks based on constraints and merit rather than momentum." – @cheddybop.bsky.social

Amen 👏

www.lorenstew.art/blog/react-w...

#webplatform #webdev #webperf

React Won by Default – And It's Killing Frontend Innovation | Loren Stewart

Exploring how React's dominance by default stifles frontend innovation, and why deliberate framework choices lead to better tools for performance, developer experience, and ecosystem diversity.

www.lorenstew.art

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Ryan Townsend @twnsnd.com · 25d

Hope this makes Interop 2026 (github.com/web-platform... for anyone who might wish to upvote).

I often need arrow-shaped boxes and they are such a PITA.

github.com

Ryan Townsend @twnsnd.com · 25d

Huge win for Shopify 🙌