Has anyone ever used Cassandra NOSQL database memory mapped files?

Has anyone ever  used Cassandra NOSQL database memory mapped files? I am looking for feedback or comments on the use of this NOSQL database. How is the performance vs Redis opr MongoDB https://wiki.apache.org/cassandra/FAQ http://www.safaribooksonline.com/library/view/cassandra-high-performance/9781849515122/ch04s11.html http://planetcassandra.org/blog/cassandra-11-reading-and-writing-from-sstable-perspecitve/ http://blog.comsysto.com/2013/04/12/cassanrda-1-1-tuning-for-frequent-column-updates/ Join my FREE newsletter to see how this work   NOTE I now post my TRADING ALERTS into my …

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