Skip to main content

Time to make an exception to the LTS version policy?

Virtual Threads Improved 

I'm starting to dip my thoughts back into technology, in preparation for getting back into interviewing and getting back to working.

This week I had a listen to the latest episode of Josh Long's "A bootiful podcast" and was surprised to hear a strong push for going with non long term support (LTS) versions of Java.

A few days later I was watching a presentation about how NetFlix is using Java in 2025 (JavaOne presentation on Youtube), sure enough there Java 24 is also being applied in order to benefit from improvements to the use of virtual threads.

JEP 491 "Synchronize Virtual Threads without Pinning" seems to be enough of a driver for some organisations to push forward outside of the Long Term Support versions.

Non LTS in prod?

I've seen companies apply a simple policy of only permitting LTS versions in production, so now I'm curious about whether the broader Java community is moving away from that approach.

Potential Migration Limitation

For the types of systems that I have worked on in the past, I can see a potential blocker to slipping out of the LTS versions - cloud providers such as AWS offering systems such as AWS lambda are still only supplying LTS versions of the Java runtime in their bundled Java offering. 

So if you have workloads running in Docker or directly on an EC2 instance you wouldn't be able to smoothly transition it across to AWS lambda.

Just a matter of time

Java 25 is scheduled to be the next LTS version, so if you are prepared to wait a few months then sticking with the "LTS only" policy could also work okay.

Comments

Popular posts from this blog

Having a go at learning some Kotlin

What's this about?  The year 2025 is almost over, so that means that it has been a bit over a decade since my old colleague Filippo gave a presentation to the development team of ScienceDirect covering the merits of the Kotlin programming language. So, it's about time that I had a proper go at using it. This blog post is intended to trace what the experience has been like, covering surprises that I encounter along the way. Getting started The programming language that I am most experienced with is Java, so I have chosen to try out implementing some functionality in Kotlin from a recent hobby project that I developed in Java involving spinning up a database in a Docker container and running some queries. JVM version support IntelliJ IDEA includes some automation for creating a new project, so I selected the relevant options to use the latest LTS version of the Java virtual machine with Spring Boot, Kotlin, Postgresql and Test containers. After a few seconds I had a new project i...

The Importance of Segmenting Infrastructure

Kafka for Logging I was recently poking around in the source code of a few technologies that I have been using for a few years when I came across KafkaLog4jAppender. It enables you to use Kafka as a place to capture application logs. The thing that caught my eye was the latest commit associated with that particular class, "KafkaLog4jAppender deadlocks when idempotence is enabled" . In the context of Kafka, idempotence is intended to enable the system to avoid producing duplicate records when a producer may need to retry sending events due to some - hopefully - intermittent connectivity problem between the producer and the receiving broker. The unfortunate situation that arises here is that the Kafka client code itself uses Log4j, so it can result in the application being blocked from sending its logs via a Kafka topic because the Kafka client Producer gets deadlocked waiting on transaction state. Kafka For Metrics - But Not For Kafka Metrics This reminded me of a similar scen...

2022 - A year in review

Just a look back over the last 12 months. January I moved back to Christchurch to live, after having spent a few months further south since moving back from London. Work was mainly around balancing other peoples' understanding and expectations around our use of Kafka. February I decided that it would be worthwhile to have a year's subscription for streaming Sky Sports, as some rugby matches that I would want to watch would be on at time when venues wouldn't be open. Having moved to Christchurch to be close to an office, now found myself working from home as Covid restrictions came back into effect across New Zealand. March Got back into some actual coding at work - as opposed to mainly reviewing pull requests for configuration changes for Kafka topics.  This became urgent, as the command line interface tool that our provisioning system was dependent on had been marked for deprecation. April   Had my first direct experience with Covid-19.  I only went for a test because ...