Eviction configuration must be enforced in Near Caches

If near cache is enabled, users should define the maximum number of elements to store in it. This is important to avoid clients running out of memory as a result of using near caching. In the current set up, when someone enables near caching, the local cache is unbounded.

The best approach is to force clients to define a maximum number of elements if enabling near caching. 0 would be unlimited.