Alexander Reelsen

Alexander Reelsen is a Developer & Advocate, Dad, works since 2013 distributed at Elastic, is interested in search, scale, JVM, crystallang, serverless and Basketball.

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Standards Over Lock-In: Modernizing Java with Jakarta EE 11 on Azul Payara 7

Learn how to get your Java applications to cloud-native, AI-ready infrastructure without a costly rewrite or vendor lock-in. Join the engineers behind Azul Payara 7 on July 9.

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Handling JDK & GC Options Dynamically in Elasticsearch

Today we will dive into the start up of Elasticsearch, how it parses the configurable JVM options and how it can ergonomically switch between JVM options on startup. As you can see, properly handling and parsing as well as choosing good default JDK options like switching from one garbage collector to another involves quite a bit of steps, infrastructure, testing, running in production & verification - and the same probably applies to your own applications as well.

Oct 28 7,2K

Alexander Reelsen

Elastic

Retweet on Twitter Foojay.io Retweeted

If you want to know what I spoke about in @jcon_conference in Germany, here's an interview I did at the @foojayio podcast:

#Java #JCON #JakartaEE #AI #A2A

02:06 PM · May 04, 2026

Retweet on Twitter Foojay.io Retweeted

Our team loves to meet and talk with the Java community from around the world. If you want to learn more. You can find all OmniFish presentations at: https://speakerdeck.com/omnifish, including links to the source code of related demos. Or get in touch for a free consultation call.

10:13 AM · April 30, 2026

Retweet on Twitter Foojay.io Retweeted

Another happy customer :)
"Their expertise and flexible hands-on troubleshooting support accelerated resolution of several unexpected hurdles and ultimately got us to a successful upgrade outcome."

If you would like to discuss how we could help your company, get in touch.

09:55 AM · April 21, 2026