Welcome to Apache Cassandra 1.0. by Roberto Zicari · Published October 1, 2011 · Updated February 16, 2014 DataStax white paper for Architects, Developers and IT Managers. DOWNLOAD (PDF)
Designs, Lessons and Advice from Building Large Distributed Systems January 1, 2009 by Roberto Zicari · Published January 1, 2009 · Last modified February 16, 2014
The Forrester Wave™: NoSQL Document Databases, Q3 2014 October 6, 2014 by Roberto Zicari · Published October 6, 2014
Optimizing MongoDB with Fractal Tree Indexes January 1, 2012 by Roberto Zicari · Published January 1, 2012 · Last modified April 8, 2014