CRDB and Cassandra are to totally different databases. CockroachDB is full SQL ACID database. With transactions, consistent indexes, joins. It's also strongly

CRDB and Cassandra are to totally different databases. CockroachDB is full SQL ACID database. With transactions, consistent indexes, joins. It's also strongly consistent overall. Cassandra is really just a key-value store, with a hierarchy of sorting keys as part of the key, so that you can do range scans with good performance (and various access patterns). Indexes are asynchronously updated (as far as I know). No transactions nor joins. Its consistency is varying (configurable).