#jdk21 — Public Fediverse posts

100k blocking tasks. A few seconds. On a laptop. With #VirtualThreads in #Java25, that’s reality. Mihaela Gheorghe-Roman explains what changed since #JDK21 & why thread-per-request is back. Still running huge thread pools?

Rethink: https://javapro.io/2026/03/05/java-25-and-the-new-age-of-performance-virtual-threads-and-beyond/

#ProjectLoom @openjdk

100k blocking tasks. A few seconds. On a laptop. With #VirtualThreads in #Java25, that’s reality. Mihaela Gheorghe-Roman explains what changed since #JDK21 & why thread-per-request is back. Still running huge thread pools?

Rethink: https://javapro.io/2026/03/05/java-25-and-the-new-age-of-performance-virtual-threads-and-beyond/

#ProjectLoom @openjdk

100k blocking tasks. A few seconds. On a laptop. With #VirtualThreads in #Java25, that’s reality. Mihaela Gheorghe-Roman explains what changed since #JDK21 & why thread-per-request is back. Still running huge thread pools?

Rethink: https://javapro.io/2026/03/05/java-25-and-the-new-age-of-performance-virtual-threads-and-beyond/

#ProjectLoom @openjdk

100k blocking tasks. A few seconds. On a laptop. With #VirtualThreads in #Java25, that’s reality. Mihaela Gheorghe-Roman explains what changed since #JDK21 & why thread-per-request is back. Still running huge thread pools?

Rethink: https://javapro.io/2026/03/05/java-25-and-the-new-age-of-performance-virtual-threads-and-beyond/

#ProjectLoom @openjdk

#Java peers...Find out what features (#JDK enhancement proposals - #JEPs) have been integrated in #JDK25 since #JDK21:

https://openjdk.org/projects/jdk/25/jeps-since-jdk-21

#Java peers...Find out what features (#JDK enhancement proposals - #JEPs) have been integrated in #JDK25 since #JDK21:

https://openjdk.org/projects/jdk/25/jeps-since-jdk-21

I wrote about #openssl #jdk21 and #pkcs12 #cryptography #debian #fedora https://kushaldas.in/posts/openssl-legacy-and-jdk-21.html
#java

I wrote about #openssl #jdk21 and #pkcs12 #cryptography #debian #fedora https://kushaldas.in/posts/openssl-legacy-and-jdk-21.html
#java

🚀 Call for Contributors – #JVM #Performance #Benchmarks

If you're interested in contributing to the #JVM #Performance #Benchmarks project - an initiative that gained significant traction in the #Java community through our recent #JDK17 and #JDK21 analyses - check out the repo:

🔗 https://github.com/ionutbalosin/jvm-performance-benchmarks

🧵 DM me or open a PR to get started

#Java #JVM #OpenJDK #GraalVM #JMH #Performance #OpenSource

🚀 Call for Contributors – #JVM #Performance #Benchmarks

If you're interested in contributing to the #JVM #Performance #Benchmarks project - an initiative that gained significant traction in the #Java community through our recent #JDK17 and #JDK21 analyses - check out the repo:

🔗 https://github.com/ionutbalosin/jvm-performance-benchmarks

🧵 DM me or open a PR to get started

#Java #JVM #OpenJDK #GraalVM #JMH #Performance #OpenSource

🚀 Call for Contributors – #JVM #Performance #Benchmarks

If you're interested in contributing to the #JVM #Performance #Benchmarks project - an initiative that gained significant traction in the #Java community through our recent #JDK17 and #JDK21 analyses - check out the repo:

🔗 https://github.com/ionutbalosin/jvm-performance-benchmarks

🧵 DM me or open a PR to get started

#Java #JVM #OpenJDK #GraalVM #JMH #Performance #OpenSource

🚀 Call for Contributors – #JVM #Performance #Benchmarks

If you're interested in contributing to the #JVM #Performance #Benchmarks project - an initiative that gained significant traction in the #Java community through our recent #JDK17 and #JDK21 analyses - check out the repo:

🔗 https://github.com/ionutbalosin/jvm-performance-benchmarks

🧵 DM me or open a PR to get started

#Java #JVM #OpenJDK #GraalVM #JMH #Performance #OpenSource

🚀 Call for Contributors – #JVM #Performance #Benchmarks

If you're interested in contributing to the #JVM #Performance #Benchmarks project - an initiative that gained significant traction in the #Java community through our recent #JDK17 and #JDK21 analyses - check out the repo:

🔗 https://github.com/ionutbalosin/jvm-performance-benchmarks

🧵 DM me or open a PR to get started

#Java #JVM #OpenJDK #GraalVM #JMH #Performance #OpenSource

@svenruppert In #JabRef, we stick with #JDK21, because the new features of JDK22 do not outweigh the updates the effort of Linux distributions packaging our app with a more recent #JDK. Regarding #JavaFX, we always go with the latest release - and also build with the latest EA version to enable testing by Linux users whether their bugs (mostly with Gnome and i3) are fixed. Our #GitHub #workflow is https://github.com/JabRef/jabref/blob/main/.github/workflows/deployment-jdk-ea.yml.

Wednesday Links - Edition 2024-07-31
https://dev.to/0xkkocel/wednesday-links-edition-2024-07-31-nef
#java #jvm #jit #jdk21 #jfr #mill #spring #gradle #github #api #git

Dive into the latest advancements in #Java with our latest article on JDK 21's virtual threads: https://bit.ly/4cEppIA

This analysis compares the performance of virtual threads with Open Liberty's thread pool, focusing on key findings such as throughput, ramp-up times, and memory footprint. While virtual threads offer several advantages, they also show unexpected performance issues, especially in CPU-intensive workloads.

This analysis guides Java developers on when and how to use virtual threads in their applications.

#JDK21 #VirtualThreads #OpenLiberty

Dive into the latest advancements in #Java with our latest article on JDK 21's virtual threads: https://bit.ly/4cEppIA

This analysis compares the performance of virtual threads with Open Liberty's thread pool, focusing on key findings such as throughput, ramp-up times, and memory footprint. While virtual threads offer several advantages, they also show unexpected performance issues, especially in CPU-intensive workloads.

This analysis guides Java developers on when and how to use virtual threads in their applications.

#JDK21 #VirtualThreads #OpenLiberty

My article about synchronized on #foojay has reached 5,000 views: https://foojay.io/today/lets-replace-the-synchronized-keyword/ 👏

:java: :foojay: #java #synchronized #virtualthreads #jdk21

Comme souvent, quand je bloque sur un sujet, ça devient une page sur mon wiki: https://www.jtips.info/Java/VirtualThread
#jdk #jdk21 #VirtualThreads

avis partagé !! RT @AlexisHassler Avec le JDK 21, les virtual threads sont séduisants. Par contre au niveau inspection c'est galère. #jdk #jdk21 #VirtualThreads

Il n'apparaissent pas avec jstack, jconsole ou visualvm.
Avec jcmd, on les voit avec la commande Thread.dump_to_file, mais pas avec Thread.print 🤯.
#jdk #jdk21 #VirtualThreads

Avec le JDK 21, les virtual threads sont séduisants. Par contre au niveau inspection c'est galère.
#jdk #jdk21 #VirtualThreads

"JAVA IS HERE TO STAY!"

#Java developers,

Truly one of the most positive and upbeat Java articles I've encountered in a while. Have a read! Please AMPLIFY!
💜☕️

#JDK #JDK21 #Java21 #OpenJDK

https://www.itpro.com/software/development/java-is-here-to-stay-popular-programming-language-to-remain-on-business-hit-lists-in-2024

"JAVA IS HERE TO STAY!"

#Java developers,

Truly one of the most positive and upbeat Java articles I've encountered in a while. Have a read! Please AMPLIFY!
💜☕️

#JDK #JDK21 #Java21 #OpenJDK

https://www.itpro.com/software/development/java-is-here-to-stay-popular-programming-language-to-remain-on-business-hit-lists-in-2024

12 Lessons Learned From Doing The One Billion Row Challenge:
https://foojay.io/today/12-lessons-learned-from-doing-the-one-billion-row-challenge/

:java: #java #1BRC #jvm #jdk21

There has been some interesting discussion on #JakartaEE 11 and #Java servers over on Twitter. The draft of the spec has been updated to require JDK 17 rather than requiring JDK 21. I agree with the decision. To maximize adoption, JakartaEE must support JDK 17 and optionally JDK 21. Dropping JDK 11 is the best we can hope for right now.
#JakartaEE11 #OpenJDK #OpenSource #JDK21 #JDK17 #JDK11 #WildFly #GlassFish #OpenLiberty #Tomcat #Jetty

There has been some interesting discussion on #JakartaEE 11 and #Java servers over on Twitter. The draft of the spec has been updated to require JDK 17 rather than requiring JDK 21. I agree with the decision. To maximize adoption, JakartaEE must support JDK 17 and optionally JDK 21. Dropping JDK 11 is the best we can hope for right now.
#JakartaEE11 #OpenJDK #OpenSource #JDK21 #JDK17 #JDK11 #WildFly #GlassFish #OpenLiberty #Tomcat #Jetty

There has been some interesting discussion on #JakartaEE 11 and #Java servers over on Twitter. The draft of the spec has been updated to require JDK 17 rather than requiring JDK 21. I agree with the decision. To maximize adoption, JakartaEE must support JDK 17 and optionally JDK 21. Dropping JDK 11 is the best we can hope for right now.
#JakartaEE11 #OpenJDK #OpenSource #JDK21 #JDK17 #JDK11 #WildFly #GlassFish #OpenLiberty #Tomcat #Jetty

There has been some interesting discussion on #JakartaEE 11 and #Java servers over on Twitter. The draft of the spec has been updated to require JDK 17 rather than requiring JDK 21. I agree with the decision. To maximize adoption, JakartaEE must support JDK 17 and optionally JDK 21. Dropping JDK 11 is the best we can hope for right now.
#JakartaEE11 #OpenJDK #OpenSource #JDK21 #JDK17 #JDK11 #WildFly #GlassFish #OpenLiberty #Tomcat #Jetty

There has been some interesting discussion on #JakartaEE 11 and #Java servers over on Twitter. The draft of the spec has been updated to require JDK 17 rather than requiring JDK 21. I agree with the decision. To maximize adoption, JakartaEE must support JDK 17 and optionally JDK 21. Dropping JDK 11 is the best we can hope for right now.
#JakartaEE11 #OpenJDK #OpenSource #JDK21 #JDK17 #JDK11 #WildFly #GlassFish #OpenLiberty #Tomcat #Jetty

New method to run a virtual thread friendly synchronized block: SyncUtils.runSynchronized(Object, Runnable);
https://github.com/japplis/Virtually

:java: #virtualthread #synchronized #java21 #jdk21

New method to run a virtual thread friendly synchronized block: SyncUtils.runSynchronized(Object, Runnable);
https://github.com/japplis/Virtually

:java: #virtualthread #synchronized #java21 #jdk21

Virtually offers an AutoCloseable ReentrantLock to simplify the code.

https://github.com/japplis/Virtually

:java: #java21 #jdk21

My CalculateAverage code has been executed for the :java: #1brc challenge.
I didn't get the expected result on the advertised "This CPU will impress you with its multi-tasking performance." CPU (See graph).
Also did some jdk8 tests.

Time to refactor the code...

#java21 #jdk21 #java8

I've created an open-source :java: Java library to make code using virtual-threads easier to write and to read.
Check it out on GitHub: https://github.com/japplis/Virtually

It's already in Maven repository.

#java #jdk21 #virtualthreads #projectloom #loom #opensource #apache #java21

I've created an open-source :java: Java library to make code using virtual-threads easier to write and to read.
Check it out on GitHub: https://github.com/japplis/Virtually

It's already in Maven repository.

#java #jdk21 #virtualthreads #projectloom #loom #opensource #apache #java21

Benchmark JDBC connectors and Java 21 virtual threads https://mariadb.com/resources/blog/benchmark-jdbc-connectors-and-java-21-virtual-threads/
#Java #jdbc #jdk21

Benchmark JDBC connectors and Java 21 virtual threads https://mariadb.com/resources/blog/benchmark-jdbc-connectors-and-java-21-virtual-threads/
#Java #jdbc #jdk21

Season's Greetings with Emojis:
https://groovy.apache.org/blog/seasons-greetings-emoji
Some @ApacheGroovy scripts showing off the newest Emoji support in #jdk21 with inspiration from
Billy Korando's recent Sip of Java post. #groovylang
🎄🎅☃️🎁🌟🎉❄️🍾

Season's Greetings with Emojis:
https://groovy.apache.org/blog/seasons-greetings-emoji
Some @ApacheGroovy scripts showing off the newest Emoji support in #jdk21 with inspiration from
Billy Korando's recent Sip of Java post. #groovylang
🎄🎅☃️🎁🌟🎉❄️🍾

Then there's #Gradle and #Kotlin. 😔 What can be said except ... be patient? I know Gradle 8.5 and Kotlin 1.9.20 (now 1.9.21) have both caught up with #JDK21 support, but what about working on #JDK22 support? It could be happening right now, and in my opinion should be. #Java #JDK #OpenSource

Then there's #Gradle and #Kotlin. 😔 What can be said except ... be patient? I know Gradle 8.5 and Kotlin 1.9.20 (now 1.9.21) have both caught up with #JDK21 support, but what about working on #JDK22 support? It could be happening right now, and in my opinion should be. #Java #JDK #OpenSource

This article highlights six new features in this release.

https://developers.redhat.com/articles/2023/09/21/whats-new-developers-jdk-21

#Java #OpenJDK #JDK21

📣 Diese Woche beim #INNOQTechnologyLunch: Was Dich mit #JDK21 erwartet. Am Mittwoch, 8.11. um 12:15 Uhr live mit @michaelvitz. Jetzt noch anmelden!

👉 https://www.meetup.com/innoq-technology-lunch/events/296987704/ #Java

📣 Diese Woche beim #INNOQTechnologyLunch: Was Dich mit #JDK21 erwartet. Am Mittwoch, 8.11. um 12:15 Uhr live mit @michaelvitz. Jetzt noch anmelden!

👉 https://www.meetup.com/innoq-technology-lunch/events/296987704/ #Java

#VMOptionsExplorer updated to cover the #JDK21 distros, upcoming #JDK22 stuff, and new JDK-based #GraalVM releases :) #Java #CommandLine https://chriswhocodes.com/hotspot_option_differences.html

#VMOptionsExplorer updated to cover the #JDK21 distros, upcoming #JDK22 stuff, and new JDK-based #GraalVM releases :) #Java #CommandLine https://chriswhocodes.com/hotspot_option_differences.html

Seit dem letzten LTS-Release ist #JDK21 verfügbar. Welche relevanten Änderungen Dich erwarten, zeigt Dir unser Java-Experte @michaelvitz im nächsten #INNOQTechnologyLunch am 08.11.! Melde Dich jetzt an!

👉 https://www.meetup.com/innoq-technology-lunch/events/296987704/

Seit dem letzten LTS-Release ist #JDK21 verfügbar. Welche relevanten Änderungen Dich erwarten, zeigt Dir unser Java-Experte @michaelvitz im nächsten #INNOQTechnologyLunch am 08.11.! Melde Dich jetzt an!

👉 https://www.meetup.com/innoq-technology-lunch/events/296987704/

All you need to know about Java21 https://unlogged.io/post/all-you-need-to-know-about-java21
#Java #jdk21