Usefull links to Kafka+ Spark + Cassandra

http://www.sparkfu.com/2015/01/spark-kafka-cassandra-part-3.html

Spark Streaming + Kafka Integration Guide

http://spark.apache.org/docs/latest/streaming-kafka-integration.html

Opis bazy NoSQL Cassandra

http://www.datastax.com/dev/blog/2012-in-review-performance

https://cwiki.apache.org/confluence/display/KAFKA/FAQ#FAQ-HowdoesKafkadependonZookeeper?