Abadi has an interesting paper here about why so many NoSQL databases are missing transactions. http://dbmsmusings.blogspot.com/2015/10/why-mongodb-cassandra-hb

Abadi has an interesting paper here about why so many NoSQL databases are missing transactions. http://dbmsmusings.blogspot.com/2015/10/why-mongodb-cassandra-hbase-dynamodb_28.html http://dbmsmusings.blogspot.com/2015/10/why-mongodb-cassandr... The fairness, isolation, and throughput (FIT) tradeoffs seem more interesting to me than CAP.