Kai Eichinger

He/Him. Senior Software Engineer at @21TORR GmbH.
I love technology and gaming.

@ on the 🦋 platform

[Kai Eichinger @k_eichinger]

@aurorascharff We’ve been wondering whether this would also be feasible for a catch all route that is fetching CMS data which in turn then renders different page layouts, or would the single shell work against us here?

[@[email protected] @sitnikcode]

Check that your site has an HTTPS DNS record.

It lets browsers skip an extra round trip and connect via HTTP/3 (QUIC) right away. Without it, they first try TCP, then switch to UDP only after seeing the Alt-Svc header.

https://t.co/K2VgKKLQ7x

[Kai Eichinger @k_eichinger]

@mjovanovictech Some people might even go as far and saying: There is a reason why almost nobody is using it and why it hasn't had much success in practice.

[Kai Eichinger @k_eichinger]

@mjovanovictech This only really works if your API surface (as in endpoints & routes) doesn't change between versioning. Otherwise you'll just end up with a lot more unnecessary complexity for no reason compared to just adding a version number as part of the path.

[Una 🇺🇦 @Una]

With style queries now in all browsers, here's my take on the best way to do dynamic color theming with modern CSS:

- register a custom property
- light-dark() to style based on color-scheme
- contrast-color() to auto-pick black or white for foreground text on any background
- style queries to branch into custom color pallets based on contrast-color

Some other fun tricks in here too like using light-dark() with transparent to swap between shadows and glowy borders

Blog post ⬇️⬇️

[Kai Eichinger @k_eichinger]

@ChallengesCss The responsive list separators 🥹🥹🥹🥹🥹 No more hacks needed. My (webdev) life is almost complete.

[CSS by T. Afif @ChallengesCss]

📝 New CSS Article!

I did a quick exploration of the new "Gap Decorations" thing, and I ended up doing a lot of fancy stuff except for decorating the gaps 😅

https://t.co/nJNlSOfrfE

Read my latest article to learn a lot of nice tricks around this feature.

[Seb ⚛️ ThisWeekInReact.com @sebastienlorber]

👀 <React.Fragment ref>

This API is really exciting, unlocking many new composition patterns

- Already available in Canary
- OSS flag enabled, so likely coming in v19.3?
- Coming in RN too!

Recently, it has been more exhaustively documented:
https://t.co/Tv9Xu9TEJQ

[Sergio Fernández @wikier]

New HTTP method RFC just landed: Query

https://t.co/mvGKAFZZ4Y

it standardizes the new HTTP QUERY method for read-only operations that need a request body, solving long-standing issues with oversized URLs and POST-based querying while preserving caching and retry semantics.

[Kane Wang @kanewang_]

Introducing Takumi v2 beta, the Rust engine that renders JSX to images without a headless browser.

- renderSvg() for SVG output
- On-demand Google Fonts: load only the subsets your content uses, as it uses them
- Language-aware text (ja/zh/ko Han unification)
- Redesigned font caching, no more race conditions
- New documentation

Try it today: bun i takumi-js@beta

[Astro @astrodotbuild]

Astro 7 is here! A new Rust compiler, a new Rust Markdown/MDX processor, Vite 8 and more. Get ready for 60%+ faster builds.

https://t.co/RG0CPr6IUF

[Adam Rackis @AdamRackis]

Reminder for those interested in TanStack Start that there’s now a course up on Frontend Masters 🚀

The instructor is kind of a dick but he seems to know his stuff 😬

Link below 👇

[Kai Eichinger @k_eichinger]

@mjovanovictech @davidfowl I only follow it from the distance, but David Fowler mentioned it a couple of times in the past, which got me curious. I found this release note from Aspire 13 from Nov 11 2025, apart from some other PRs on GitHub https://t.co/IAsrU7kGo1

[Aiden Bai @aidenybai]

Introducing cnfast

A 3x faster drop-in replacement for `cn`

npx cnfast migrate

[.NET @dotnet]

.NET 11 Preview 5!
📚 JSON Lines • full outer joins • X25519 • generic Random
⚙️ Faster async suspension • JIT boosts • GC cleanup
🛠️ File‑based app refs • MCP template
🌐 Blazor SSR validation
📱 MAUI fixes
🗄️ EF1004 async warning
👉 Read: https://t.co/1WLJY4EK4k

[Kai Eichinger @k_eichinger]

@mjovanovictech @davidfowl And what about the 3 ".NET Aspire" in your article? :D

[Kai Eichinger @k_eichinger]

@alexdaubois How does it compare performance-wise when using a complex expression as matching arm vs complex case arm?

I'd assume that it needs to walk all arms one by one in that case, no? 👀

[Symfony @symfony]

🚀 Symfony AI Spotlight: One API to Rule Them All
➡️ https://t.co/B5t5DgFrGA

[Node.js @nodejs]

⚠️ Security release pre-alert: The Node.js project will release new versions of the 26.x, 24.x, 22.x
releases lines on or shortly after, Wednesday, June 17, 2026 in order to address one or more security issues, the highest severity is HIGH.

Details: https://t.co/lsjkOtkuxG

[colinhacks @colinhacks]

in case you missed it

Nub is also a Rust-based package manager that has 100% pnpm compatibility and is faster than Bun