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.

Stable, Secure, and Affordable Java

Azul Platform Core is the #1 Oracle Java alternative, offering OpenJDK support for more versions (including Java 6 & 7) and more configurations for the greatest business value and lowest TCO.

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What do you know about the code changes that were just introduced into the codebase? When will you notice if something goes wrong?

Jakarta EE 11: Beyond the Era of Java EE

This user guide provides a brief history of Java EE/Jakarta EE and a detailed overview of some of the specifications that will be updated in Jakarta EE 11.

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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 6,5K

Alexander Reelsen

Elastic

Retweet on Twitter Foojay.io Retweeted

Interesting read on @foojayio about the current state of the @grailsframework, at @TheASF
Written by @spoole167 interviewing @JamesFredley
https://foojay.io/today/grails-isnt-done-yet-part-1-inside-the-asf-reboot/

11:31 AM · March 25, 2026

Retweet on Twitter Foojay.io Retweeted

#Java 26 is here, and its main purpose is to provide a solid foundation for future things to come. It comes with new features, performance improvements and multiple enhancements–my blog post has all the info! 🚀

07:15 AM · March 17, 2026