As mentioned there will be more blogs. But we focus on the LATS (low Latency, high Availability, high Throughput and scalable Storage). Other key-value stores have some of the LATS qualities but RonDB has them all. SQL capabilities on top of this helps.
We will have a blog out tomorrow about how it compares to Redis - diving deep into the threading architectures of open-source Redis, commercial Redis, and RonDB.
NDB Cluster 8.0.23 contains a new thread model that makes it possible to grow and shrink size of data nodes. This is default in RonDB, optional in NDB. Also RonDB has fully automated the memory configuration such that the user needs only specify which VM instance type he wants and the number of VMs. Plus a number of bug fixes, improvement to monitoring and some more.
Another metaphorical way of describing the difference is that NDB is high-end PC whereas RonDB is a powerful Mac. NDB can be configured in any number of ways whereas RonDB does the configuration automatically and the user will always get access to the most advanced features of NDB.
RonDB is a managed version of NDB in the cloud, and we have some optimizations for its use as a Feature Store for ML.
We call RonDB a distribution of NDB.
