Question

I use hibernate + ehcache to read a workflow engine database.
hibernate does not write anything on that database.
If i set TimetoLive setting in the cache, the cache won’t reflect any database changes unless TimetoLive arrives.

database changes is done by the workflow engine API, so there is no way to use hibernate to write the database.

Shouldn’t ehcache knows the cache is expired and do the updates for me ?

Any clean way to solve the cache wrong problem ?

Answer 1

the cache won’t reflect any database changes unless TimetoLive arrives.

That’s the intended functionality! These second level caches do nothing but store data in hash maps and know nothing about the changes unless you tell it to or the time to evict the objects out of cache and reread them.

To solve this is to not use caches on volatile objects.