Agenda This blog will tell you that what is Cassandra. Here in this blog you can get a basic tutorial about Cassandra and to understand this you should have a basic knowledge of Java. It will help if you have some exposure to database concepts. What is NoSQL A NoSQL (Not Only SQL) database provides a mechanism to store and retrieve data other than the tabular relations used in relational databases. These are schema-free and can handle huge amounts of data. The primary features of a NoSQL is simplicity of design, horizontal scaling, and finer control over availability. CAP Theorem CAP theorem states that you can only choose 2 out of the 3 Consistency: each read will get you the most recent write Availability: each node (not failed) always executes queries Partition-tolerance: if the connections between nodes are down, the other two (A and C) promises, are kept. It is explained in a equilateral triangle in below diagram: What is Cas...