Please consider the clustering caches library for rxjdbc.

**Most Database connection needs to be cached to make pagination more efficient:**

Here is the reason why Hibernate(Heavy ORM) has:
http://www.tutorialspoint.com/hibernate/hibernate_caching.htm

**For example Ehcache:**
http://ehcache.github.io/

However consider opening up this API to allow others to integrate with OTHER type of Caching library:
Similar to the Mapper model in DAO.