Well, although the requirements which would lead to such setup are clearer now, it's still smelly to me. Under this conditions there is still a false dichotomy

Well, although the requirements which would lead to such setup are clearer now, it's still smelly to me. Under this conditions there is still a false dichotomy between RediSQL on one side, and "complex RDBMS" on the other. What about simple RDMSs like H2? Such solution would meet the requirements: - network-accessible RDBMS - no configuration The only requirement I can think of which would make this solution inadequate would be "No JVM on the system", which sound quite far-fetched.