JEP proposed to target JDK 21: 446: Scoped Values (Preview)

Mark Reinhold mark.reinhold at
Tue May 30 18:18:07 UTC 2023

The following JEP is proposed to target JDK 21:

  446: Scoped Values (Preview)

  Summary: Introduce scoped values, which enable the sharing of immutable
  data within and across threads.  They are preferred to thread-local
  variables, especially when using large numbers of virtual threads.
  This is a preview API.

Feedback on this proposal from JDK Project Committers and Reviewers [1]
is more than welcome, as are reasoned objections.  If no such objections
are raised by 23:59 UTC on Tuesday, 6 June, or if they’re raised and
then satisfactorily answered, then per the JEP 2.0 process proposal [2]
I’ll target this JEP to JDK 21.

- Mark


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