I'm currently using the version 1.2.0.Final of cache2k. I want to persist the internal state of the cache so that my application can reuse the cache content after restarting. I've walked through the API of cache2k but I didn't find any possibility to do that. Thank you for your answer!
Persistence is there but "it is not yet production ready"
see also How to define persistence storage in cache2k? and https://github.com/cache2k/cache2k/issues/30