title: Cassandra in-memory configuration
body: <p>We currently evaluate the use of Apache Cassandra 1.2 as a large scale data processing solution. As our application is read-intensive and to provide users with the fastest possible response time we would like to configure Apache Cassandra to keep all data in-memory.</p>
  
  <p>Is it enough to set the storage option caching to rows_only on all column families and giving each Cassandra node sufficient memory to hold its data portion? Or are there other possibilities for Cassandra ?</p>