maxEntries = 0 support for eviction

To save memory I'd like to configure maxEntries to 0.

In case I use a Cache to share (possible) big data as entry between nodes. These data are persisted inside store and only used rarely. So I see two ways to realize that:
1) I can set maxEntries to 0 so that after use the entry is evicted from cache.
2) Have a cache mode which does not keep data in memory and just work transparent on the store.