Research Manager on the @GraalVM team at @Oracle. Dev tools, languages, VMs. Previously at @HPI_DE, @GoogleColab, and @MatonGuitars. Views are my own.
Joined July 2009
- Tweets 6,227
- Following 536
- Followers 3,385
- Likes 5,996
778 Photos and videos
May 6
Big @GraalVM news:
- Monthly releases start this month 🚀
- New commercial support options now available 🤝
Accelerating the GraalVM release train and announcing new commercial support!🚀🏆
medium.com/graalvm/accelerat…
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Apr 20
GraalVM CE can now sandbox untrusted JavaScript and WebAssembly code! 🚀
As AI generates more and more of the code we run, the ability to execute it safely matters more than ever.
We have more coming that builds on this, so stay tuned!
github.com/oracle/graal/pull…
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Mar 25
GraalWasm just got faster! 🔥
The new threaded interpreter delivers significantly better interpreter performance. In interpreter benchmarks, total execution time is reduced by 5-40%!
Details: github.com/oracle/graal/pull…
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Mar 19
Excited to speak at #WasmCon Europe next Monday about bringing #WebAssembly to the JVM ecosystem with @GraalVM.
I’ll demo GraalWasm in a Spring Boot app and show how GraalVM can compile JVM apps to Wasm for browser, mobile, and cloud. Join us!
Details: sched.co/2DY2u
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Fabio Niephaus retweeted
GraalVM in action: wouldn't it be cool to move your workload from using 43 replicas to 12, and CPU cores from 15 to 5, reducing resources usage by ~67%? You can do so with @GraalVM Native Image!
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Fabio Niephaus retweeted
Feb 4
.@fniephaus is now talking about GraalWasm at @Jfokus! / GraalVM Wasm: Fast, Efficient, Portable Apps
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Good morning #JFokus!👋
Make sure to catch @shaunmsmith and @fniephaus to ask anything you want to know about GraalVM & WebAssembly, and attend their session on Wednesday!
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GraalVM 25.0.2 is now available! 🚀
Upgrade to get the latest security updates and improvements.
Release notes: graalvm.org/release-notes/JD…
Downloads: graalvm.org/downloads/
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Jan 15
GraalVM Native Image is ~3.5x faster than SapMachine… 😉
… in @parttimen3rd's version string benchmark.
Why? The `native-image` launcher is a native image itself. So it starts up much faster, and uses fewer CPU and memory resources!
PR with details: github.com/oracle/graal/pull…
OpenJDK is faster than GraalVM*: mostlynerdless.de/blog/2026/…
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Jan 14
WasmGC is coming to GraalWasm, unlocking the power of JVM garbage collectors for #WebAssembly! This will also get GraalWasm a lot closer to implementing the full Wasm 3.0 spec.
Join @shaunmsmith and me at @Jfokus next month to learn more: jfokus.se/talks.html?showid=…
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"GraalVM: Database Integration, Serverless Innovation and the Future" an airhacks.fm conversation with @thomaswue about GraalVM release changes, database integration and serverless architectures
is ready to listen adambien.blog/roller/graalvm… #airhacks #java #podcast
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Native Image is an *amazing* technology!
Having a 150mb JAR full of weird compiler stuff (from jrtfs to Swing!) in kotlinc quite easily built with Native Image, and immediately yielding this kind of improvement is outstanding.
Looking forward to what's next 👀
13 Nov 2025
The @Kotlin team at @JetBrains is working on a @GraalVM-compiled kotlinc. Early experiments look very promising:
> So far, a native image with PGO offers a properly "warmed-up" kotlinc and with up to 20% more peak throughput.
Ticket: youtrack.jetbrains.com/issue…
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13 Nov 2025
The @Kotlin team at @JetBrains is working on a @GraalVM-compiled kotlinc. Early experiments look very promising:
> So far, a native image with PGO offers a properly "warmed-up" kotlinc and with up to 20% more peak throughput.
Ticket: youtrack.jetbrains.com/issue…
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4 Nov 2025
Excited about @QuarkusIO’s latest update, including first-class support for JavaScript, Python, and Wasm – powered by @GraalVM! 🚀
3 Nov 2025
Quarkus continues to focus on native for swift start-up time and low memory footprint. Learn more in By Severin Gehwolf's blog post, "Continued Focus on Native"
buff.ly/UsX1P4Q
ALT Continued Focus on Native by Severin Gehwolf
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3 Nov 2025
Your friendly reminder that @GraalVM can turn your JVM application into a tiny container image. See for yourself: youtube.com/watch?v=6wYrAtng…
1 Nov 2025
It's still amazing to me that I can turn a Scala JVM application into a 20M container image that starts instantly. Thanks @graalvm!
The same project, naively packaged, results in a 665M container and takes a few seconds to start.
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Fabio Niephaus retweeted
31 Oct 2025
Really great to see plans for adding better integrated support for running @graalvm language implementations for JavaScript, Python, and WebAssembly in your Spring applications! github.com/spring-projects/s…
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GraalVM 25 October CPU release is now available!🚀
Upgrade to get the latest security updates and improvements.
graalvm.org/downloads/
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20 Oct 2025
Thrilled to see #GraalWasm deployed in #MySQL Heatwave! 🥳🔥
WebAssembly support is now available in MySQL Heatwave!
Compiled code runs at near-native speed, securely sandboxed by GraalVM 🚀
Learn more: blogs.oracle.com/mysql/post/…
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New guest blog post:
JavaScript in Java: Driving Dynamic UIs with GraalVM at Scale: medium.com/graalvm/javascrip… 🚀
by João Nogueira from @Picnic
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Happy to be partnering with @Devoxx!🤝
All our session recordings are now live, enjoy!
youtube.com/watch?v=YlMinrvd…
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