Anyone has thoughts about cassandra and how it compares to mongodb? There seems to be a big enterprise push with azure's cosmosdb, but I've not heard much about it from people who have actually used it.
The advancement of PostgrSQL has been amazing, and much credit is due indeed to the NoSQL community’s innovations. I cannot comment of MongoDB except to say that it is quite different than Cassandra.
To summarize, be sure you really need Cassandra and are able to dedicate the appropriate resources to it before taking the plunge.