title: ReactiveCrudRepository to use Hibernate in spring
body: <p>Is it possible to use Hibernate and RDBMS(Mysql, Postgres etc) with <code>ReactiveCrudRepository</code> instead of <code>CrudRepository</code>?  I have tried some samples with Spring Data Jpa and Hibernate, but couldn't get it done.  I was only able to find a few samples on <code>ReactiveCrudRepository</code> for MongoDB and <strong>cassandra</strong>.</p>