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OpenJDK HotSpot JVM developer at Oracle. Drinks coffee and pets cats. Opinions expressed are, unsurprisingly, my own.
Erik Österlund









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It’s 5 days left to JavaOne. Go buy a ticket if you haven’t already! And don’t miss my session about what we are cooking in the ZGC project right now: reg.rf.oracle.com/flow/oracle/...
Mar 13, 2025
📢Important Update 📢 Many have asked for more time to submit to the 2026 #JavaOne call for papers. We've extended the deadline until Nov 13th at 11:59pm PT. Be sure to submit your #Java proposal(s) before time runs out: ➡️ social.ora.cl/6013A7UXF
7mo
Erik Österlund
Integrated ”JEP 516: Ahead-of-Time Object Caching with Any GC”! openjdk.org/jeps/516
That is a good oak.
JDK 25 has been branched from the main line and is now in Rampdown Phase One: mail.openjdk.org/pipermail/jd... openjdk.org/projects/jdk... #JDK25 #OpenJDK #Java
Wow you got that fast! Hope you enjoy it! Best experienced with a big cup of coffee.
7mo
8mo
Jun 5, 2025
This is an awesome oak tree close to where I live.
1mo
After working on ZGC for a decade, I’m happy to announce that I’m publishing a book about ZGC in JDK 25. It ships 22 May (www.taylorfrancis.com/books/mono/1...) and is being published by Taylor & Francis. You should get a copy if you want to learn more about ZGC. It’s available for pre-order now.
8mo
Today, May 22, my book about ZGC is finally ready and available to order! I can recommend reading it if you want to learn more about the magic nature of ZGC. You can order it here (among many places): www.routledge.com/The-Z-Garbag...
reg.rf.oracle.com
Sharat (Shar) Chander - 🟦🌊
Session Catalog
5mo
Erik Österlund
Erik Österlund
1mo
#Java peers, #JavaOne 2026 is right around the corner! Read my LinkedIn article to learn more about the conference's value...and of course, register now! www.linkedin.com/pulse/javaon...
Erik Österlund
4mo
Erik Österlund
This book explains how the Z Garbage Collector was designed, why it was designed this way, the common pitfalls to avoid when using ZGC in JDK 25 and how to get useful information from the garbage coll...
www.routledge.com
Mark Reinhold
The Z Garbage Collector: In JDK 25
Erik Österlund
openjdk.org
Erik Österlund
Register Now for JavaOne 2026 | March 17-19 | Redwood City, California For three decades, Java has been a constant in an industry defined by change. Frameworks come and go, architectures shift, and ha...
www.linkedin.com
JavaOne...30 Years of Java and the Community That Keeps It Moving
mail.openjdk.org
JDK 25 is now in Rampdown Phase One
Sharat (Shar) Chander - 🟦🌊
This book explains how the Z Garbage Collector was designed, why it was designed this way, the common pitfalls to avoid when using ZGC in JDK 25 and how to get
www.taylorfrancis.com
The Z Garbage Collector | In JDK 25 | Erik Österlund | Taylor & Franci
Another photo of the Arbour Oak in Wollaton Park, Nottingham Courtesy of my son Elliott, who was enjoying University Freshers Week by getting to know the local oak legends, & not just the pubs
8mo
The English Oak Project
Looking forward to reading it!
1mo
Stefan Marr