I can provide some practical evidence: We've been using Java 21 virtual
threads for a large set of consumers since a few weeks and haven't
encountered any issues. Anything else would be surprising since they
should be a 1:1 alternative to "real" threads.
Cheers,
Thorsten
Am Freitag, dem 13.12.2024 um 20:49 +0000 schrieb John Lilley:
> Our java clients are artemis JMS 2.32, but we can and will keep
> updating.
> Our application is written using almost entirely the "RPC" pattern:
> - Post a request packet to service queue
> - Block the caller thread waiting for a response in reply-to queue
> - Process the result
>
> While procedural programming with blocking RPC calls is easy, there
> are problems with resource use and potential deadlock (all service
> threads busy, but then someone makes a recursive RPC call). Some
> members of our team advocate for a purely "reactive" model to solve
> these problems, but it is harder to understand and debug.
>
> This leads me to a few questions:
> - Deadlock is only a concern with fixed thread pools. Can Artemis be
> configured with "elastic" pools that expand and contract dynamically?
> - Has the Artemis JMS client been validated against Java 21 virtual
> threads? Can I just replace the thread factory to create virtual
> threads instead?
>
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