Migration guidance for an embedded setup from 10 to 12

[bryan-coleman]

A little background. A few months ago, I migrated an embedded setup from version 9.4 to 10. More recently, I migrated our codebase from jdk 11 to 17. Now, I am looking to migrate jetty from version 10 to 12 and am looking for some guidance.

Should I look to migrate to version 12.0 first and then to 12.1; or is it best to migrate to 11 and then to 12?

Is there a migration guide available to aid with the migration of 10 to 12? (I have seen one for 11 to 12; but not 10 to 12)

Does 10 match up to ee8 or ee9? (I have seen reference to both and am seeking clarification)

My thought/hope is to get to a supported version via the simplest path first and then look into potential options of migrating the internals (i.e. ee, jakarta), if possible.

Thank you!

[lachlan-roberts]

I would recommend just going straight to 12.1. The changes between 12.0 -> 12.1 are minor compared to the changes from 11.0 -> 12.0.

You can find the migration guides in the documentation (see https://jetty.org/docs/jetty/12.1/programming-guide/migration/11-to-12.html).

If you are currently on Jetty 10 you are using the javax namespace. So you could upgrade to using EE8 in Jetty 12.1 and still javax.servlet namespace.