With every major release Community edition has more and more limitations
Aerospike is cutting down features / adding limitations in every major release for Community edition.
In 4.0 they limited max number of namespaces and number of servers
In 5.0 they limited max database size.
Therefore Aerospike might be good if you can buy and use Enterprise version, however for projects that you expect to run on Community edition we don't recommend it anymore.