Evaluating Apache Cassandra as a Cloud Database by Roberto Zicari · Published November 1, 2011 · Updated February 16, 2014 DataStax white paper. DOWNLOAD (PDF)
DataStax Enterprise 4.0 In-Memory Option A look at performance, use cases, and anti-patterns June 5, 2014 by Roberto Zicari · Published June 5, 2014 · Last modified February 12, 2015
Inside MarkLogic Server. Its data model, indexing system, update model, and operational behaviors. Revision 6 January 1, 2011 by Roberto Zicari · Published January 1, 2011 · Last modified February 16, 2014
Couchbase customer presentations (LinkedIn, Orbitz, McGraw-Hill, and others.) January 1, 2013 by Roberto Zicari · Published January 1, 2013 · Last modified February 16, 2014