The NoSQL solutions available today provide distributed architectures with fault tolerance and scalability. However, to provide these benefits many NoSQL solutions have given up the strong data consistency and isolation guarantees provided by relational databases, coining a new term – “eventually consistent” – to describe their weak data consistency guarantees.
Is this acceptable? Shouldn’t we be demanding at least close to real time consistency?
A must read article by Dave Rosenthal http://gigaom.com/2013/11/02/next-gen-nosql-the-demise-of-eventual-consistency/