Java stripped out the SecurityManager and offered nothing in its place. Peter Firmstone's answer: fork Apache River and OpenJDK to bring back both JINI and JVM-level authorization. Laudable, even necessary - and a very hard sell, because it runs only on his JDK. It's like a post-mortem for JINI while it's still trying to breathe.
Dragonfly is a multithreaded ground-up reimplementation of the Redis wire protocol, described as being designed to scale vertically where Redis can't. The interesting thing is that Dragonfly is selling itself as "in-memory infrastructure for caching, feature stores, and job queues," which is the IMDG shape from the cache side of the river and a quiet admission that the cache framing was always too narrow.