Hi Tim,

If you have an HTTP load balancer that supports "sticky sessions", you can have 
a cluster of as many Tomcat instances as you like as backend, without having to 
rely on any clustering feature of Tomcat.

Yours,
Reg


> Gesendet: Freitag, den 04.04.2025 um 02:57 Uhr
> Von: "Tim N" <tnti...@gmail.com>
> An: "Tomcat Users List" <users@tomcat.apache.org>
> Betreff: Tomcat Clustering Roadmap And Max Node Limit
> 
> For a long time up to the latest version 11 documentation, there has been a
> recommended maximum limit of 4 nodes per cluster.
> 
> https://tomcat.apache.org/tomcat-11.0-doc/cluster-howto.html
> "This works great for smaller clusters, but we don't recommend it for
> larger clusters — more than 4 nodes or so."
> 
> Are there any plans to improve this?
> 
> It's a pity to have to change the architecture when going from, say, 3
> notes to 8 by introducing farms. What is the next simplest free cluster to
> move to? Redis? Any idea how cluster farming compares with redis?
> 
> What other options are there?

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