Cassandra—A Distributed Database System: An Overview

Abstract

In big data environment, apache Cassandra is a distributed database which offers very high availability. It is an open source database system and is designed to manage large transactional data across various server globally. Main feature of Cassandra is to provide high availability and very high fault tolerance, decentralized database system with zero downtime. A traditional relational database (RDBMSs) is used to storing data for various applications from many years, but some changes are required because application must be scale to levels that were unimaginable. But only scaling is not the main concern of changes, companies are also requires such type of applications that always available and running fast where RDBMS database fail. Apache Cassandra is a fully distributed database that has such type of architecture where it handles extreme data velocity with highly availability, scalability and recovers from fault tolerance easily. In Cassandra architecture, there is no master node to handle all the nodes in the ring or network. The data distribution among nodes in this architecture is in equal probation. Cassandra creates such type of environment where an entire datacenter can lose but still perform as if nothing happened. This paper provides a brief idea about Cassandra.