#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

#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

🚀 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

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

:java: #virtualthread #synchronized #java21 #jdk21

@frankdelporte In #JabRef, we needed to have the fix for a workaround of the #64kb limit of #Java - https://bugs.openjdk.org/browse/JDK-8240567. We did not #backport our fix to JDK20, but relied on a sufficient quality of #JDK21 at the time of our release.

Dive into our in-depth analysis of #JDK21 and get a sneak peek into what's on the horizon for #JDK22.

Read more on #InfoQ: https://bit.ly/3sK6Ctf

#Java #OpenJDK #ProjectAmber #ProjectLoom #ProjectPanama

First JDK 21 Release Candidate: https://mail.openjdk.org/pipermail/jdk-dev/2023-August/008059.html; downloads: https://jdk.java.net/21/ #JDK21 #Java21 #OpenJDK #TestItNow

@Gradle should come with a warning label: "May not work with the latest #JDK release" (right now that is #JDK20). I guess #Gradle 8.3 will catch up (just in time for it to fall behind again when #JDK21 is released in September). #Developer #Java #OpenJDK

Big news in the #Java world today! The finalisations of #PatternMatching in switch (https://openjdk.org/jeps/441) and #RecordPatterns (https://openjdk.org/jeps/440) are now proposed to target #JDK21. 🥳 (heard it via @nipafx on the bird site)

Deep dive analysis: we examine #JDK20 and predict what features may be targeted for #JDK21.

Read on #InfoQ: https://bit.ly/3LgPse6

#Java #ProjectAmber #ProjectLoom #ProjectPanama