On 05/08/2026 13:39, Stephen Booth wrote:
Hypothetically, is the session clustering protocol the same between
different major tomcat versions.
I've never had any problem doing a rolling update for minor versions
without dropping any sessions (we also use parallel deploy).
To be perfectly honest I'm happy doing a full restart and just dropping
sessions when doing a major version update but I do wonder if it would
work if I tried a rolling update.
Hmm. It should work. But it isn't something that gets tested very much
(if at all). I'd test it first.
If you are using the EncryptInterceptor it might not - depending on
exactly which versions you are migrating to/from because of recent(ish)
changes in the wire format for encrypted data.
Mark
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