If you were wondering who is using the Java Ahead of Time Cache already, the answer is Netflix:
https://www.youtube.com/watch?v=4kEh8hxAP4U
https://inside.java/2026/05/23/java-aot-in-production-at-netflix/
It is one of the reasons to their SLA success. Like when there is a major outage and they need to spin up thousands of instances somewhere else instantaneously.
And it is key to lower their resource usage. Money saving.
Check out this #JavaOne talk by my colleague Martin Chalupa and I about how #Netflix operationalized #AOT and Project #Leyden to improve our #Java application startup times in production.
"Java AOT in Production at Netflix"
Interesting to see real-world numbers from Netflix on Project Leyden.
Do you feel like my latest Leyden blog post about the AOT Cache in Java was too heavy?
Don't worry, I have a shorter version: https://developer.ibm.com/articles/java-project-leyden/
https://youtube.com/shorts/zvmxZYIA13Q
Project #Leyden Project #Valhalla #OpenJDK
And most importantly: The people behind it.
Sharat Chander invites you to meet #Oracle, top speakers and the global #Java community at #JCON2026.
How is Leyden improving Java Performance? A three part blog series.
You can read it either on
https://delawen.com/2026/03/17/How-is-Leyden-improving-Java-Performance/
or
https://dev.to/delawen/how-is-leyden-improving-java-performance-part-1-of-3-4n7e
In this series of 3 blog posts we will explain how OpenJDK project Leyden is helping to improve a specific area of performance where Java has notably lagged behind other languages i.e. application ‘startup’, ‘warmup’, and ‘initial footprint’. Part 1 explains what those terms mean and why Java faces challenges in matching the behaviour of other languages. It then provides an overview of what Leyden has done to improve startup and warmup in existing JDK releases and what is planned for upcoming releases.
Are you still using Spring over @quarkusio Are you sure you want to use native?
Think again: https://quarkus.io/blog/new-benchmarks/
And this is BEFORE Leyden, which smashes the numbers for startup time compared to native.
#java #development #software #openjdk #leyden #performance #optimization #native #springFramework #quarkus #quarkus3 #graalvm
I think it is safe to say that @quarkusio is doing an amazing job to become the Java reference framework.
https://www.youtube.com/live/utwE70i9Ehg
If you love performance and optimization but you are still not on Quarkus, you should try it and compare.
#Leyden #OpenJDK #Quarkus #Quarkus3 #Java #software #performance #optimization #development #developers
Still don't know what #Java #Leyden is?
You can learn about it on my last talk: https://www.youtube.com/watch?v=BK1vZQYZofs&pp=0gcJCXwKAYcqIYzv
If you just want to see it in Practice with fancy graphs on how much you can improve startup and warmup times, start on minute 28!
#OpenJDK #optimization #software #softwareEngineering #softwareDevelopment
María Arias de Reyna
Ian Brown 
Moritz Halbritter
JCON
Foojay.io
