We're currently running a microservices application using Java 11 and PostgreSQL. I'm considering whether we should move to Java 21 and start utilizing Virtual Threads. Has anyone made this switch? What has your experience been like? Are there specific benefits or challenges we should be aware of when migrating?
3 Answers
In my experience, using Virtual Threads significantly simplified complex async code into more readable formats. But it's crucial to assess how your current libraries and framework stack can handle this transition without creating issues like blocking operations or connection pooling problems.
Yes, simplifying code is a major advantage, but compatibility needs to be checked first.
Absolutely! It's worth doing a Proof of Concept (POC) to measure performance with Java 21 against your current setup. The idea is to actually gather data to see if the switch benefits your specific use case. That's the real way to approach these upgrades!
Exactly, it's all about measuring and analyzing the results.
True, but I think staying updated on software versions is important too.
Upgrading to Java 21 is definitely recommended since it's the latest Long Term Support (LTS) release. While Virtual Threads are beneficial, keep in mind they're not a one-size-fits-all solution. They won't instantly make your application run better unless you address specific performance bottlenecks and potential thread pinning issues.
Exactly! Make sure to research their actual benefits for your app.
Exactly. Test within a lower environment before rolling out widely.