Is this meant to be open source?

[tucker-bluesage]

So googling around I've found your blog post and it lead me here, although looking at the code I noticed no license so this can't be used as open source, which I think it's meant to be, but I could be wrong. If this is meant to be open source could you add a licence like Apache2, MIT, LGPL, etc, or let me know that it is not. Thanks.

[tucker-bluesage]

I also noticed that you had this:
" //Lovingly poached from JCacheRegionFactory
//https://github.com/hibernate/hibernate-orm/blob/main/hibernate-jcache/src/main/java/org/hibernate/cache/jcache/internal/JCacheRegionFactory.java"

and since JCacheRegionFactory.java is LGPL that this code should be LGPL. Although I am not a Lawyer and like to make sure before using other people's code.